You can play badminton with a very big force and you can also do it with a tiny force.You can hit with a very big force at very beginning,and then suddenly change it to a very small force.This is one strategy of playing badminton.Of course,don't overhit the shuttlecock out of the line.Playing badminton is good for your health.For example,you need to react very fast as you can to reach it at each time.This can test your reaction ability,at the same time this can also practise the muscles on your arm.