How do i build up my stamina and my strength??

I am a thin boy and i can play badminton. But i am not srong enough for my stamina and strength so can someone help me??

How do i build up my stamina and my strength??
Eat healthy and exerise. Stop eating oily fast foods and find a healthier alternative. Cut down on the amount od sugar you consume.
Reply:for stamina training, you could do joggings and jump ropes. for strenght, like for example you want to gain strenght for your grip, what you could do is grab a tennis ball and squeez it as hard as you can and hold that squeez for a while and then repeat it again. or if you want to developyour biceps and triceps, lifting dumbells is good. do these for about 8 weeks and your strength will improve. just don't forget to stretch before doing any of these and give yourself time to recover. and of course, proper diet.
Reply:eat lot's of vegetable rather than non veg foods, exercise well. be happy
Reply:Strength and conditioning......do weight training and try cardio kick boxing.

choose roller blades