How much exercise is too much?

This depends on each individual, your physical state of health and what you're doing for exercise. But how I gauge whether its too much is by what my body tells me. If my entire body feels fatigued then I'll cut down on my exercise for that day. Typically the most a person is supposed to exercise is 5 to 6 days in a week, and rest for 1 to 2 days. I used to think that rest meant completely no exercise. And I'd take 2 full days off, but then when it came time to start exercising again I realised that my body felt horrible and it was a struggle to complete my usual exercise. So I would recommend that on rest days you do light exercise rather than no exercise. For me, light exercise means doing 20% to 50% of what I would normally do on an exercise day. However, there are times when my body feels really fatigued and I'll just take the whole day off with no exercise at all, this happens once in a few weeks in my case. On a typical day I generally have 2 exercise sessions, one on an empty stomach and one later at night. If your muscles hurt when you exercise, you're definitely doing too much for your current physical state, always remember, muscle ache is okay, but if it hurts, stop the exercise immediately and seek medical attention if necessary.