Trying my hardest to bring up my arms. Being long limbed (lanky git) I struggle with thickness in my arms. Also my sports of past have never really helped. Cricket and fighting especially focuses very much on shoulder movements and very little need for bicep/tricep contraction. Plus the repetitiveness of movement and high cardio base is awful for muscle building.
So now is time to focus on building a balanced physique, and arms are definitely one area for improvement for me. I plan on using barbell curls, isolation dumbbell curls and concentration curls to build up my biceps and skull crushers, close grip bench press and push downs for triceps. I will try adding two sessions a week for arms and see how that works, but I will measure progress and if nothing happens I will reduce back to one session per week. I never like to pass an idea up before trying it out. What works for you may not me and vice versa. So trial and error in this game is vital