Astrology is about the influence of Heavenly bodies on Human beings and events on earth.

It has been established that the movement of Moon affects the Blood flow.

It is observed that, during Surgery,bleeding is less,if Surgery is performed during the waning of the Moon,Krishna Paksha.

Hence,those who follow Sastras fix dates for surgery during Krishna Paksha.

And it is called proved that during Full Moon,body fluid levels rise and those with mental issues suffer more during New Moon.

Interesting that movement of celestial bodies could affect those on Earth,not only Man,but animals and plants.

There is another side to this.

Do the activities on Earth affect Heavenly bodies, like Sun, 🌒?

Research affirms this.

Hinduism talks about the duties of Man.

They list five.

Manusha yagnya, Oblations to Man,

Pitru Yagnya, Oblations to Ancestors,

Deva Yagnya, Oblations to Deities,

Bootha Yagnya, Oblations to The Five elements of Nature,and

Rishi Yagnya, Oblations to Seers.

These are performed to ensure we live happily.

In return for these yagnyas,they, in turn,bestow us with the necessities of Life.

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‘istan bhogan hi vo devadasyante yajna-bhavitahtair dattan apradayaibhyo
yo bhunkte stena eva sah’
In charge of the various necessities of life, the demigods, being satisfied by the performance of yajna [sacrifice], will supply all necessities to you. But he who enjoys such gifts without offering them to the demigods in return is certainly a thief.

Bhagavad-Gita Chapter 3,Verse 12

‘devān bhāvayatānena
te devā bhāvayantu vaḥ
parasparaḿ bhāvayantaḥ
śreyaḥ param avāpsyatha

Bhagavata Gita chapter 3,verse 11.

That is human beings,when they offer to Devas, Heavenly beings,they,being satisfied return in kind,like ensuring adequate timely rainfall,healthy growth for plants,animals and human beings.

The mutual help between Man and Heavenly bodies ensure The Balance of the Ecosystem ofcthe Universe.

The daily religious practice of Performin Sandhya Vandana,offering of water as Argya, strengthens the Sun,Hindu texts assert.

Study of Human actions and Universal Cycles.

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Certain phenomena recur at regular intervals, often referred to as cycles. There are solar and lunar cycles in weather, earthquakes, and volcanic eruptions. Other phenomena also show cycles that match lunar and solar cycles in biological, physical and socioeconomic phenomena. These studies reveal that there is a synchronicity shared by all of these phenomena so much that the solar-lunar linkage of FEM, including life, can be considered a single unit.

The lunar cycle and lunar phases are observable behaviorally and physiologically in numerous life forms. These effects occur in fish, shellfish, insects, mammals (including humans), and plants. For example, shellfish renew their shells, undergo regeneration and sexual activity in accord with the lunar tidal cycle. Guppy-fish have a color sensitivity on their back that is most responsive during Full Moon, and least responsive at New Moon. The Golden Hamster displays lunar rhythms in activity, and urinary volume and acidity. Lunar phases and plant growth are correlated for plants in the wilderness, as well as in the laboratory. In fact, two different lunar cycles affect all plant growth. Various life forms exhibit lunar periods in behavior and/or physiology. These lunar effects on life are components that sustain and partially control FEM’s dynamics.

Solar cycles of various lengths are also evident in many life forms and their activities. Consider some examples. Alternative cycles of sunspots reverse with a period of four years. Also having a cycle of four years are plankton yields in Lake Michigan, and the abundance of Arctic Fox, Canadian Fox, salmon, Snowy Owls, field mice, and Ruffed Grouse, as well as various socioeconomic activities. A 5.9-year solar cycle is also manifested in Grouse abundance, and various socioeconomic activities. The 9.11-year solar cycle is found in the abundance of Lynx and the Woodcock, agricultural production, and various industrial activities. Grasshopper and partridge abundance, and tree-ring growth display a cycle similar to the 9.3-year sunspot cycle. At least twenty industrial activities also have a cycle of 9.3 years. The 9.93-year sunspot cycle is apparent in Lynx, Ruffed Grouse and Waxwing abundance. Cycles of diverse lengths are also evident in human activities and physiology, other life forms, and physical processes on the Earth. In addition, the correlation between solar cycles and cycles in the biosphere makes it clear that there is an underlying common cause, and it bears the evidence of a unified whole involving life integrated with FEM, and its solar and lunar linkages.

We often think that humans are immune to such influences, but the evidence indicates otherwise.

Human aggression, conspicuous in national and international wars, occurs in cycles, as well. A study of civil war from 600 BC to AD 1941, and international battles from 600 BC to AD 1943 revealed cycles of 6, 9.66, 11.25, 12.33, 17.75, 22, 53.5, 143 and 164 years. Cycles of 5.98, 9.73, 11.26, 13.2, 17.2, 21.9, 29, 52.9, 59.8, 101 and 143.7 years were noted in a more recent study. For example, the 29-year cycle peaked in 1913, which was the beginning of World War I, again in 1942, during World War II’s most violent battles, and again during the escalation of the Vietnam War in 1971. The next peak is slated to be in the year 2000. Civil war also displays cycles, which are 130, 91, 62.9, 27.4, 18, 10 and 8.9 years.
The global political system shifts in cycles of 8.6, 17.4 and 34 years. Cycles in global economic transitions occur in cycles of 5.6, 9.4, 20.5 and 54 years, which often result from or contribute to human conflict. One of these studies took in the political and economic histories of 58 nations.
Instability in social change often occurs at the time the Sun’s center, the center of mass and Jupiter are in alignment. Such are the times when solar, earthquake, volcanic and climatic transitions peak, as well. When considering all of the cycles mentioned in this section, they are at or close to the lengths of solar and geomagnetic cycles.
Solar activity, geomagnetic activity, and weather are correlated to changes in blood pressure, blood composition, and the physical and chemical state of humans. It is very possible that these factors play a significant role in triggering political, international and civil conflict (i.e., wars, riots, etc.). Changes in human behavior are know to take place during periods of high or low solar activity, as well as during geomagnetic storms (also see sections 2.1 and 2.3). Solar and lunar effects are known to influence civil unrest, which can be triggered by air ionization due to particle flow along the Field lines of FEM. The cycles of national and international conflict noted above are at or close to the lengths of solar and lunar cycles.
Cycles in the economy are probably the best known and researched due to attempts at predicting market trends (i.e., to make money). More than two decades ago the following industrial and economic cycles were recognized: seven 4-year, eight 5.9-year, thirty-five 6-year, twenty-three 8-year, twenty 9-year, five 9.4-year, three 9.9-year, eight 12.6-year, two 16.67-year, four 17.3-year, two 17.7-year, twelve 18.3-year, four 22-year, and thirty 54-year cycles. All of these cycles, with the exception of the 54-year cycle, were recently reaffirmed a quarter century later (i.e., 54 years had not elapsed since the first study)……
Looking more deeply into cycles it becomes even more evident that what we do here on Earth has effects that go beyond the Earth. Many major physical forces on Earth are interrelated with those of the Sun. Other cycles that coincide include variations in the GNP, stock prices, interest rates, periods of general instability, economic turning points, animal populations, climate, geomagnetic storms, earthquakes, volcanic activity, changes in the length of day, and others. Cycles would not normally cluster unless they were related by cause and effect, or by a common cause. The cause is the human destruction of life, which in turn weakens the Fields, resulting in terrestrial, then solar, and finally, solar-induced terrestrial effects.

This interrelationship has been observed in a number of ways. One of the earliest cycle researchers comments on this: “When cycles of seemingly the same length are found on both the Sun and the Earth, the solar waves crest after the Earthly ones.” Putting that into a perspective of cause and effect, the conclusion would be that Earthly phenomena is the cause of the solar cycles.

This relationship is also apparent in the Gross National Product (GNP) and the Wholesale Price Index, both of which are a measure of the life destroyed in the manufacture of goods and the waste generated. A study compared these indexes over a time period from 1889 to 1978 with sunspot cycles, and disclosed the causal factor. In this article, “Sunspots and Cycles: A Test of Causation,” the authors state: “In an attempt to identify the limitation of exogeneity testing, we gathered data on a ‘classic’ question in economics. Is there a causal relationship between sunspots and the business cycle? On the basis of the evidence, we… are forced to conclude that the U.S. economy has a significant impact on the Sun, but that sunspots have no influence on the economy. We were, of course, more than a little surprised to the find that the U.S. economy has any influence on the Sun. However, as [others have] said so well, one ‘would have to be rather more pigheaded in order not to have the evidence change his views.’ We agree that identifying the linkages constitutes an important topic of future research.” [for a brief, partial discussion on this see the web page The Unity of the Sun, Earth and Moon].

The stock market similarly reflects the degree to which life is destroyed, and also displays a cycle. Sunspots have a cycle of 9.15 years, which is “exactly the length of the dominate cycle in the stock market.” Furthermore, when other cycles around this same length are examined the majority of biological, industrial and economic cycles peak first, then solar, and finally, biological, social-unrest and geophysical cycles affected by the solar cycles.

Included in the last phase of these interrelationships is the cycle apparent in the International War Battles Index, and the 11-year solar cycle. That is, we humans begin to destroy the very industries and urban centers in war that were destroying life to begin with. Not only does war follow, but geophysical events, such as earthquakes, floods, droughts, and so on increase, which also eliminate life-destroying urban-industrial centers. These relationships are particularly true for the dominant 11-year solar cycle. [for a brief, partial discussion on this see the web page In Defense of Nature — The History Nobody Told You About]. Other observations confirm these interrelationships. Just as there are differences in the activity of plants and animals at night, as compared to day, there are differences in chemical reactions (Piccardi Tests) during the night and day. A worldwide force affects both organic and inorganic compounds (i.e., colloids). Definite correlations exist between chemical reaction rates (precipitation curves), and the curve of the daily relative sunspot number. None of the meteorological factors can be said to be responsible. Furthermore, there are differences in these reactions according to latitude that are in accord with the latitude phenomena of FEM. These chemical reactions reflect solar activity in precipitation rates with sunspots peaking after the reaction times. They are also correlated with geomagnetic storms, sudden cosmic-ray bombardments, solar flares, and have an annual peak, like solar activity, at the March (vernal) equinox. Moreover, these reactions are evident in living things, which are a major component of the functioning of FEM (particularly as a bioelectrostatic generator).

This chemical-reaction effect is also apparent in living things. All life on Earth, even the simplest creatures, such as bacteria, display behavioral and physiological changes four days prior to magnetic disturbances on Earth that are later caused by solar activity. In turn, alternating electromagnetic fields, like those that accompany geomagnetic storms, are biologically active, changing animals (systolic) rhythms, bioelectricity, and blood dynamics.

Source.
http://www.livingcosmos.com/cycles.htm#Cycles