I am a software engineer (mid 30's) who lived his life without really any physical activity (no sport at all). Fitness level == -1. I tried to do gym twice in my life and stopped after a while (for different reasons). I have always been unhealthy underweighted until a year ago where I started to eat a lot and gained 10 kg.
I started like two months ago going to the gym again, I bought a training program from a fitness coach which consists of deadlifts, squats in smith machine, biceps/triceps superset etc.
However, I have always noticed/felt that my body stops responding after two to three months. I have a little pumped biceps, almost non existing triceps and a pumped chest. After a workout, I feel tired but my muscles aren't sore anymore. When I started, my muscles were sore like hell, but that changes within two weeks.
I do know that my nutrition is not ideal but I'm working on increasing the health food daily. What I don't understand is why I'm getting fat at my belly.
For some reason, my triceps are refusing to grow. Adding more weight to triceps pull down makes me lose my posture and I don't feel that I'm doing the exercise correctly.
This cycle of training but no result is hurting me. Is my body refusing to respond since I have never been in active life, or I can't get muscles since I'm in my mid 30's?