Do muscles grow on rest days?

Yes, muscles grow primarily during rest days, specifically during sleep, when protein synthesis repair processes rebuild the damaged tissue stronger and larger than before ( 17 ).

What are signs of muscle growth?

Signs of muscle growth include increased strength (lifting heavier weights), visible changes in muscle definition, clothes fitting tighter around limbs, and weight gain on the scale despite a consistent waist measurement.

How to tell if strength training is working?

Strength training is working if you are consistently achieving progressive overload, meaning you can lift more weight, perform more reps, or require less rest over time compared to previous weeks.

Am I still building muscle if I'm not sore?

Yes, muscle soreness (DOMS) is not a required indicator of growth; you can build muscle effectively through tension and metabolic stress without ever feeling debilitating soreness.