So I started lifting 2 months ago, and i've been hitting the gym once every two days, so on/off/on..etc. been doing phraks greyskull lp variant, and gains have been pretty good cos i've been eating good food like a pig. but the only problem is, i feel like i can get more gains because that workout hasn't made me SORE! like i improve my weights, but i think i have potential to add more exercises. any advice?