So last year, around october-ish, I was playing 3-5 times a week, and my knees started hurting, i thought it was copyable until I hit an out-of-position jump smash and landed hard on my left leg only in an effort to spring back, but my knee got really sore after that. To make a long story short, the problem was Osgood-Schlatters, and it still lingers after a long training session or consecutive sessions. I did a decent bit of leg and fitness work before this, and my time out has hit my fitness hard. Just wondering what methods you would suggest to get my leg strength and fitness improved without being too detrimental to my knees. I want to start next season as strong and as fit as possible! Oh, I have asthma too by the way if that is important, relevant enough to need an inhaler in a loooooong tournament, like MS and MD for plenty of games Thank you -Nathan