is it normal for your knees to hurt during/after exercise?

As far as I know, it's pretty normal. I weigh a pretty good amount (about 185-190),so I'm sure that's what causes my knee pain. Do you have good running shoes? You're not wearing ankle weights while doing all of this, are you? As I dropped weight, worked on strength training,and warming up with at least 5 mins of walking before jogging, my knees have felt better. This may not be your case though. Best of luck finding your answers!

I'd say the answer is no - there is a difference between muscle soreness and pain during/after exercise - you don't want pain. Since you are running daily AND doing insanity, I would say your muscles may be getting fatigued/tired and you're probably losing your form. I would suggest a couple of things:

1) make sure when you are doing squats etc in insanity that you are doing them with proper form - making sure you stick your butt out so your knees don't go past your toes, and also making sure your knees don't flop in, especially when coming out of a squat. One downside with insanity is they often want you to do things super quick, but sometimes you lose form when doing this. If the pain is on the outside of your knees you could have a tight IT band, which is connective tissue/fascia that runs between your hip and knees on the outside of your leg. Ensuring you have proper form and googling IT band stretches/massages could help with this.

2) Make sure you give yourself adequate recovery time. When you exercise your muscles actually break down under the stress. This is when you feel the burn during and soreness after working out. When you gain muscle/strength/speed it's actually because your muscles are adapting to the injury of exercise, so your muscles get bigger so they can do the work without breaking down next time (which is why after a while you have to up the anti to get any further results). However if you don't give your muscles time to recover, they will not rebuild optimally and you will fatigue more quickly leading to the improper form I mentioned earlier which can lead to your pain. What I would suggest is if you do a leg work out, maybe the next day don't job, just focus on arms/abs to give your legs time to recover. I don't do a workout again until I am recovered from the previous one for that body segment. The last thing you want to do is push too hard, have weak muscles then blow your knee just because you didn't let your body heal/get stronger.

If these don't help then it could be a more deeply routed mechanical problem (the way your skeleton and muscles produce movement) in which case I would go see a physiotherapist opposed to a doctor. They can help you with movement related pain and in the unlikely case that it is something more serious (probs not due to your young age = healthy joints) then they can tell you then to see a doctor, but I'd just skip that step and save your money in the mean time, as a doctor would probably just give you a referal to see a physio anyways (and maybe some pain meds if it's bad enough).

Anyways, hope this helps!

no it's not normal . pain is your body's way of telling you something is abnormal.

you probably need to check your form . i noticed with workouts like insanity where speed is important it's really easy to develop bad form

no it's not normal . pain is your body's way of telling you something is abnormal.

No, it's not normal. My knees hurt during/after exercise because they are bum knees (with scars to prove it). It could be your form, your shoes, muscle tears, cartilage damage... you should get it checked before it becomes serious.