His arms look painful, that look when too much oil is present. They all abuse synthol, the key is using enough but not too much as you spoil the effect completely. Derek has no separation between bicep heads, or even between the bicep and triceps.
Should one body part carry more weight when deciding these things? We already know the back wins the show, but the arm is such an important muscle group. I think perhaps 75% started training to get big fuckin arms, even the female bodybuilders have better arms than Derek.
