F
flowerz
Guest
Ok my cardio sessions usually consist of a 45 min moderate speed jog/run 4x week. A few weeks ago I decided to try out some HIIT. At first it was fun, but now I'm left with sore knees-not so fun. I am not a beginner runner. I’ve been running for a few years now. I’ve even been through the grueling process of training for a marathon, but I've never had any problems with sore joints EVER, until recently. I do not recommend HIIT more than once a week. It’s extremely hard on the joints, and it can also weaken your immune system. If you are new to running, then I suggest you cut it out completely. Also, I have noticed better results with a longer-low intensity jog. Just my two cents. If you are having success with HIIT, all the power to you.