Contrary to earlier research conclusions, a study at the University of UmeÃ¥, Sweden, has shown that you renew and re-build muscles and muscle fibers even though they hurt and are sore after training.
This means you can train the day after a hard session, without worrying about getting injured. Even though you are sore, this does not mean that you have injured the muscles or the connective tissue. Rather the opposite. You have improved.
– You can safely train again the day after a hard session, even though you are sore, says anatomy Professor at the University of UmeÃ¥, Lars-Eric Thornell.