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.
Plan Down Time. Your muscles need time to repair and recover, particularly after strenuous workouts that involve weight training. The tissue repair and rebuild process can take 1 to 2 days. If you do not give your muscles adequate rest, this may result in further tissue breakdown and possible injury. When it comes to building muscle, sometimes less is more. And this is especially the case after a workout where you have pushed your limits.