Because yo have been sitting for to long
False. You would be more likely to get injured playing at a higher level than you are physically ready for. Also, you probably would not stick with your sport because you would not enjoy playing it since it would be too hard and not fun.
Helping people means telling them that there is someone who do care for them and having respect for their needs without any selfishness. It is like standing beside a person for encouragement and facing the problems together. The person who help, means he/she do care, means have a wonderful heart.