Want tight, toned, firm arms without that pesky “arm flab?” This is what I consider the best 4 minutes you can do to tighten not only your arms, but also tone your shoulders and even your abs (if you do them from the standard position).
Want tight, toned, firm arms without that pesky “arm flab?” This is what I consider the best 4 minutes you can do to tighten not only your arms, but also tone your shoulders and even your abs (if you do them from the standard position).