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.
Rating Newest Oldest. Best Answer: Depends on how bad you tore it. A small tear can take 3 to 4 weeks. Moderate 6 to 8 and a completely torn Muscle can take 6 months to heal. But that's if you are going through rehab, and getting treatment. If you like to sit on the couch alot it could take even longer. And all those times will double before you'll back to full strength.