I am currently a month and a half into judo and enjoying it very much. I am starting to notice some major areas I need to work on(aside from judo itself). I am 6ft8in tall and weigh about 240lbs. My big issues are flexibility for being able to drop my center of gravity below my almost always shorter(but sometimes heavier) opponents. Can anyone recommend daily morning/nightly stretches for flexibility and body weight exercises to help with leg strength? (core strength might be a better focus along with legs) Really anything I can supplement my weekly classes with which i can do with my body weight at home I would really appreciate. Thank you for your time and help!