Here’s a Beautiful Paradox - If You Lift lighter, You Will Still See Significant Muscle Growth

Rethink what you think you know about strength training. Discover how a smarter approach can lead to bigger gains with less strain.

Can I still build muscle with lighter weights? Yes, but strict FORM is everything. Light weights can be just as effective at building muscle as bigger weights, you just have to increase the volume. Your body will thank you for it and you'll get better results, more quickly than going heavier but in a short range of movement. 

Source: Journal of Applied Physiology