The sartorius muscles extending from the front of thigh around the knee,the hamstrings,the calf muscles-Achilles tendons when overworked by too many sit ups produce lactic acid that makes the muscles sore.
If you not sore after a workout, your not going to gain muscle. When you lift, what you are doing is making tiny rips in your muscle, your body recovers by building new muscle to avoid it again. So if your muscles arent sore, your not going to gain any muscle.
i think that if you do as many sit-ups as you can in one minute that you will just be really sore the next day. And you might harden your belly a little bit.
If you want to build muscle you have to get sore, if you don't your just maintaining.
Your chest may be sore after doing push-ups because the exercise puts stress on the muscles in your chest, causing tiny tears in the muscle fibers. This is a normal part of the muscle-building process, and the soreness is known as delayed onset muscle soreness (DOMS). It typically occurs 24-48 hours after exercise and is a sign that your muscles are repairing and getting stronger.
sore groin ,groin muscle pain
You muscles could become sore after sleeping when you do not exercise for many reasons. The most common reason is that you stayed in one position to long which made the muscle stiff and tired.
It's caused by working the muscle to fatigue and the muscle is trying to recover and the muscle knows that it has to grow to handle what your doing to it so if you keep lifting heavy you will be sore as the muscle keeps growing to handle the extra weight your constantly putting on it.
if it gets sore
A person's tendons can be sore for many reasons. A person tendons usually hurts after doing a run.
That's what it is. It is a combination of lactic acid and your muscles have broken down from the overuse. Rest them for a day and the muscle will heal itself and be stronger.
Work out really well and find out
Your leg is sore, you can't do many things that you would normally do without some pain.