having a balanced diet and taking exercises.

I do yoga every day. I think yoga is very good for body health. Also diet is necessary if you really want to keep fit.

饮食清淡而不单调 ，生活有规律。这是我爷爷的秘诀。Give yourself more fresh food which is easy to digest and nutritious, live a regular life. The way is secret of my grandfather(he is 83 years old) .

keeping a healthy lifestyle :proper sports,balance diet and regular work and rest and so on.Besides, staying with a good mood is necessary.For example,making more good friends and doing some delighted things with them;building a happiness family atmosphere.Or some other things to make happiness,to gather happiness and to share happiness.

First of all one should decide what his goal is.What is he going to become fit for?Then: is he strong and persistent enough to start and go on and on? 呼吸 and 太极拳,healthy food (no meat) are the ways i go to keep sound and balanced. Best wishes! Don`t worry, be healthy! Mila.