"The buzz of the second day" or why does EVERYTHING hurt?"

All that is a great feeling on day 2 after physical load, which gently and affectionately called "Fever". The legs do not go, do not hold hands - but with confidence again tomorrow in the hall. This pain is familiar to everyone who at least once in their lives engaged in physical exercises or gave unusual his muscles load, dug up the garden for example. You can't outrun it, even if you are an advanced athlete, it appears every time you make changes to your training plan: changed the intensity of the exercise, increased weight or exercise that I have not done for a long period of time.

But what is it? What is the nature of this phenomenon?

1. Version number 1: "Tear and damage the muscle fibers".
In short, the pain is a result of injury of individual muscle fibers, to be precise, their component parts - the Myofibrils. It works like this, we train, we give stress on the muscles, they destroyed the most of the Myofibrils and the more intense our workout is, the more we ruin them and the more we get injured muscle fibers. Hence the Pain as a result of "micro injuries". They start in our body's internal protective processes provided by the appropriate hormones that help the "wound" Sagitta, accelerated the division of the protein in the muscle. The result is we increase muscle weight and increase in volume.

2.Version number 2: "Injury is tissue that connects those muscle fibers." Everything is the same, there is a fabric and it gets damaged and stretching under the influence of our exercises, which lead to a lengthening of the muscle after eccentric exercise, hence the pain.

"You can't outrun it, even if you are an advanced athlete"

3.Version number 3: "Swelling and Metabolites". We have a "trauma" of the muscle fiber, in this place, naturally inflammation appears. Due to the fact that the destruction of Myofibrils is decomposed into radicals, which requires water for recovery, they take them from cells, resulting in a shortage of water.As a result the muscles swell, affecting pain receptors the nerve endings. The output is "Restricted muscle" recovery time 3 - 4 days.

4.Version number 4: "Lactic acid".
The most controversial version of today, evidence of this theory, or rather many points of view, and no scientific evidence. She can't combine all of the processes that occur as a result of physical recovery after exercise. It explains just what the pain may appear due to accumulation of muscle breakdown products or lactic acid. And the result is the same pain. But then come the scientists, who say that these products are washed out from the body almost immediately. But this version is the place to BE.