Your muscles are growing to make you strong
and you've been working them hard
By getting exercise.
apathy
The over-extension of a muscle might feel like burning or pain in the muscle. After the exercise, the muscle can feel sore or even swollen.
There are several substances and mechanisms that cause muscle pain. The most common are immediate onset and delayed onset pain. Immediate onset pain is caused by muscle fatigue which comes from exercise of physical activity and occurs when the muscle has rerached its conditioned fatigue point. Delayed onset pain occurs 24-48 hours after the muscles have been worked to their fatigue point and are rebuilding themselves. This is the muscle soreness that many people experience when they start a new exercise program.
Best ask a Doctor - probably just muscle fatigue from too much exercise
To relieve pain from leg with excess running or exercise you should drink water to keep your muscles hydrated. You can also apply ointments or compress the muscle that is hurting.
Pain that might be good pain might be when doing exercise and you never might done that exercise before and afterwards it will hurt. This is good pain because is sending you a message that your muscles are getting stronger and denser.
The warm water in a bath warms your muscles allowing them to relax. Muscle tightness is often a main cause of pain, especially after exercise.
Pain and weakness in human muscle cells are often the result of a buildup of lactic acid, which accumulates during intense exercise when oxygen levels are low. This accumulation can lead to muscle fatigue and discomfort. Additionally, the buildup of other metabolic byproducts, such as hydrogen ions, can contribute to the sensation of pain and reduced muscle function. Over time, chronic muscle pain may also be associated with inflammation or damage to muscle fibers.
build up of lactate
It is best to wear a back support belt when exercising to avoid waist injury. Modern people are getting more and more prone to low back pain, so you must protect your waist. The website---lowerbackbelt has many quality guaranteed back braces. You can know many from the blogs of it.
After exercise muscles fill up with lactic acid. a cool down is always essential after exercise. preferably stretching to release the acid which causes muscle pain.