well first of all i am a basketball player 5′9 and can grab rim but in the beginning of the season i had to do physical rehab for my knee they gave me some things that would make me run and jump higher i am in good shape but my overall flexibility is moderately bad. so my question is if you can give me some stretches that improve range of motion and flexibility that would be awesome and or pointers in jumping higher. and if you can back it up that would be great but if you cant thats all right by the way my knee is fine now.