What is DOMS?

Delayed Onset Muscle Soreness.

When muscles are required to work harder than they’re used to or in a different way, it’s believed to cause damage to the muscle fibres, tearing them slightly in order to repair and become stronger – resulting in muscle soreness or stiffness. DOMS is often mistakenly believed to be caused by a build up of lactic acid, but lactic acid isn’t involved in this process.