

What you are describing sounds like lateral raises. Not every arm exercise uses the same muscles and some muscles are stronger than others. Biceps are used mostly when you do curls, and those are very strong. For lateral raises you use you shoulders and they are weaker. So don’t feel bad if you have to start with a low weight (or even none) the first few weeks and progress less fast than with other exercises, thats completely normal.
Whole wheat pasta or quinoa cooked in broth with tomato sauce with lentils, bell peppers, onion, herbs and garlic. Sometimes I add tofu for extra protein and cheese when it fits in my macros for the day (you can also add chicken I guess, but I’m vegetarian)