People used to think that a build-up of lactic acid was the cause of muscle soreness. That is not true. Lactic acid has nothing to do with it, therefore the fermentation process the body uses to get the lactic acid into the muscles is also not true. Muscle soreness is caused by the damage done to the muscle fibers. Muscle biopsies taken on the day after hard exercise show bleeding and disruption of the z-band filaments that hold muscle tissue together as they slide over each other during a contration. Scientists can tell how much muscle damage has occurred by measuring blood levels of a muscle enzyme called CPK. CPK is a normally found in muscles and is released into the bloodstream when muscles are damaged. Those exercisers who have the highest post-exercise blood levels of CPK often have the most soreness. Many people think that cooling down by exercising at a slow pace after exercising more vigorously, helps to prevent muscle soreness. It doesn't, cooling down speeds up removal of lactic acid from muscles, but a build-up of lactic acid does not cause muscle soreness, so cooling down will not prevent it. Stretching does not help either, since post-exercise soreness is not due to contracted muscle fibers.
Fermentation in muscle cells produces lactic acid. This happens when you have overworked your muscles, which can happen during exercise.
Fermentation
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.
Anaerobic respiration - resulting in lactic acid build up in muscle cells, and sore muscles...
Lactic acid created during a process of "lactic acid fermentation."
Anger causes the release of hormonal signals that cause the muscles to tense up. When the muscles are tensed for too long, this causes fatigue and sore muscles.
There is lactic acid build-up due to anaerobic cellular respiration within skeletal tissue (under hypoxic conditions).
oxygen debt. more oxygen is needed than what is being supplied. the body then begins anaerobic respiration (the cells "breathe" for you). a result of anaerobic respiration is lactic acid. lactic acid is that soreness feeling you get after a hard workout
It Builds up when you exersize and muscle cant get enough oxygen. its another way of creating energy.
Stress, over use, or heavy lifting are the more common cause of muscle aches. Besides that the flu can cause sore muscles but it comes with other symptoms too.
Yes, ibuprofen can help alleviate sore muscles by reducing inflammation and pain.
When muscles are over-exerted, the muscle cells carry out anaerobic respiration to compensate for the oxygen deficit. Lactic acid produced as a result of this causes muscles to become sore or develop cramps.