Melissa Grelo on Instagram: "Strength training isn't easy, but it is simple. How so? Once you learn the basics like muscle groups, exercises and proper form to avoid injury, you (or a trainer or YouTube!) can create a simple, weekly routine that you do for four to six weeks straight. No jumping around different machines or exercises or routines, just the same exercises week to week for 4-6 weeks straight to build muscle. 💪 I've been doing this back, biceps and stretching routine for three weeks