All sports harm you:

1. cricket damages your arm
2. football hurts the back of your knee
3. the water in swimming disturbs the delicate balance of intake of nutrients from the air and disposal of waste products through the skin
4. running and jogging jolts the body and harms the feet, knees, spine and brain
5. cycling harms the thigh muscles by making them short, and squashes and makes hard the abdomen
6. tennis harms your wrist, elbow and shoulder
7. skiing causes the abdomen to be hard
8. dancing, even slowly, disturbs the nerve cells in your body
9. yoga exercises (“asanas”) are also not good for you in general (see my article “Asanas and Sex”).
10. sit-ups and weight lifting, etc, disturb the brain and harm the abdomen and other parts of your body and damage the emotional energy centre
11. climbing stairs is bad for your knees
12. going down stairs requires concentration that harms the tranquillity of your brain

If you put up with pain in exercise then you are also damaging your love energy centre. In all exercise, it is most important that your brain is completely relaxed (no frowning, gnashing of teeth, etc). Your abdomen should be relaxed, soft, except sometimes in sex.

Sitting is bad for you as the leg muscles atrophy, the abdomen is squashed, and the brain becomes dull. Thus, for example when writing, watching TV, eating etc, one should if possible be on the floor in a variety of different positions. When going to the lavatory, one should not sit but preferably squat or, failing that have your bottom a little above the lavatory rim.

Having said all that, an active, natural life is optimal. In any job it is inevitable that you will have to do some activities that are not beneficial to you. You need to carry shopping, do cooking, etc. Doing many things, even sports, is good for you overall, sitting in front of a TV or computer screen all day is most harmful to you. It causes tremendous stress to your nervous system, this system being the one that for almost all of us living today is going to fail first and cause you tremendous suffering in the next ten or twenty years (see: "Pollution Can Be Good For You"). Being in a warm room all day is equally harmful to you: you need to be exposed to the natural weather and not be completely insulated with an excess of heavy clothes. It results in you feeling cold in mild weather and not being able to tolerate heat in only slightly warm weather, and means that you catch disease quickly and recover slowly.

The most important exercise is walking, see my article "Slow Walking".

In terms of sex, you (man and woman) should know that it is not competitive (just as walking is not competitive). Hence you do not need to prepare your body for sex. However, in this age, both men and women are choosy. Also, there are not as many good men and good women to marry as in previous generations. Hence a man (not a woman) may need to develop his arm muscles (through push-ups, not weight lifting) and his leg muscles (through a succession of squatting and standing). He needs to do this about 5 minutes per day prior to marriage, not after marriage. The genital organs of both man and woman need regular exercise each day prior to marriage so that the person maintains a high level of desire necessary for a good marriage.