Do you know that the Bible and the Ancient Chinese give you the same answer!
Exercise is NOT the answer.
The answer is Godliness or A Virtueous Character.
Bible: 1 Timothy 4:8 ►
for while bodily training is of some value,
godliness is of value in every way, as it holds promise for the present life and also for the life to come.
Note Godliness is of value every way .... i.e. happiness, wisdom, health, wealth, good relationship, whatever is good for life and it is not just for the PRESENT life and also the FUTURE life after death.
Ancient Chinese Wisdom:
Cultivating life begins with cultivating virtues.
老子 51 “道生之，德畜之，物形之，势成之。是以万物莫不尊道而贵德”
Lao Zi DaoDeJing 51:
The Dao/WORD give birth to it (life),
Virtues builds it up,
Materials shapes it (with the body),
Energy (Life Force) completes it.
Hence, all living things honor the WORD/Dao and treasure virtues.
Zhuang Zi said,"Hence nothing without Dao cannot be born. Born without virtues cannot be bright (i.e. shines with light).
So, don't just go for running and other aerobic exercises, remember to do more about cultivating your virtues ... your self-control, reduces your excessive desires, manage your stresses, control your impluses & greeds,etc.... Most important, discover the purpose of your life.
1 Timothy 6:6-11English Standard Version (ESV)
6 But godliness with contentment is great gain, 7 for we brought nothing into the world, and[a] we cannot take anything out of the world. 8 But if we have food and clothing, with these we will be content. 9 But those who desire to be rich fall into temptation, into a snare, into many senseless and harmful desires that plunge people into ruin and destruction. 10 For the love of money is a root of all kinds of evils. It is through this craving that some have wandered away from the faith and pierced themselves with many pangs.
So, while we exercise our body, we must also exercise our brain and our spirit.