Quick question for yall. I’m currently 18 YO and have been lifting on and off for about 2 years but about 6 months ago i began to take my MMA and weight training very serious instead of just wasting my time. I havent missed a workout in either sport for the last 6 months and have got a relatively dialed in diet.
My only problem is that my biceps wont grow. My chest, triceps, shoulders, legs etc. all seem to be gaining strength and size but not my biceps. I only work them once a week and my bicep w.o is 5x5 barbell curls, 3x8 dumbell curls and a 3x10 seated concentrated curl.
However, both of my biceps have stretch marks that run up and down them (from the inside of my shoulders towards the elbow joint). So it seems that there is irrefutable biological evidence that they are growing yet they are nowhere near the size of my triceps and they dont seem to be getting stronger
p.s. I do back and biceps the same day and I am progressing nicely with those lifts associated with my back just fyi.