It depends on what causing it. the only thing I can say is to drink plenty of fluids but I would recommend to go see a doctor, if you are unsure or worried.
What device can be used to measure fitness level during a cardio workout?
Heart rate monitor
If you're very young or very old you could be misjudged for not being as capable as somebody in their 20s for example. While this may often be true it is not always and isn't something we should strive towards.
If you're of a certain ethnicity; let's say you're a Kenyan and you're running a marathon, people could misjudge that you would run the marathon at a very good pace. This, again, is not the necessary case.
If you're female, it is often possible that you would be misjudged as not being strong enough compared to your male counterparts.
True because you would need to put up an ad saying "kidney donor needed" or "blood donor needed" if you didn't do that you would most likely be stuck with no donor unless a friend or family member donates
This is a false statement. There is a big difference between feeling the burn and feeling pain, if you are feeling pain it could mean that you have pulled a muscle and you should stop and consult your doctor, also if you are feeling back pain that means you maybe pinched a nerve or slipped the disc. Lastly, other signs pain you should look for is ankle pain and feeling lightheaded because ankle pain could indicate a sprain and lightheaded can indicate that you are either overworked yourself or you are not getting enough water consumption.
