Are Sore Muscles Actually Getting Bigger?

The video discusses muscle soreness, known as Delayed Onset Muscle Soreness (DOMS), which occurs after starting a new workout routine. It explains that soreness is due to micro trauma in muscles, especially during eccentric contractions. While muscle growth involves damage and repair, soreness doesn't always correlate with growth. Over time, the repeated bout effect reduces soreness as muscles adapt to exercises.

Why might feeling sore not necessarily indicate that you are building more muscle?

Explain the concept of the repeated bout effect in relation to muscle soreness.