1 Collagen is most commonly found within the body in the skin, bones and connective tissues. 2  The word collagen is derived from the Greek kolla, meaning glue. 3  Collagen gives the skin its strength and structure, and also plays a role in the replacement of dead skin cells. Collagen is most commonly found within the body in the skin, bones and connective tissues. 2  The word collagen is derived from the Greek kolla, meaning glue. 3  Collagen gives the skin its strength and structure, and also plays a role in the replacement of dead skin cells.
Healing time depends on the severity of the strain. Mild muscle strains usually heal within two weeks. Moderate muscle strains may take six to eight weeks to heal. Prevention of Recurring Back Strain. Many people who experience recurring back pain have weak core muscles - the muscles that support the back.
Weight lifting should only be done every other day or 3 days a week with rest in-between. Muscles take at least 24 hours to heal. With intense workouts, it might take up to 48-74 hours. Tip: If your muscle get sore for more than 2 day or longer than you wanted, decrease the intensity.Vincent Â· 8 years ago.eight lifting should only be done every other day or 3 days a week with rest in-between. Muscles take at least 24 hours to heal. With intense workouts, it might take up to 48-74 hours. Tip: If your muscle get sore for more than 2 day or longer than you wanted, decrease the intensity. Vincent Â· 8 years ago.