I have been going to the gym for 2 years and 3 months now. My primary goal is to build muscle.
I have to admit that in the first 2 years, I only used machines. Sometimes I used dumbbells, but no barbells at all. I went to the gym up to 4 times a week, up to 90 minutes each. I used full-body routine back then: up to 8 different workouts with 4 sets x 8 reps. I noticed that I was getting stronger each day and I built some muscles.
After those 2 years, I thought I should level-up myself, from beginner to intermediate level. I read articles from the internet and I thought it'd be better for me to switch my routine to split. So for the last 3 months, I go to the gym 3 times a week. The days are splitted into: triceps+chest, biceps+back, and shoulders+legs. Each consists of 7 different workouts with 4 sets x 12 reps. This is also my first time to incorporate barbells. Yep, I just learnt how to bench-press last 3 months.
But this hits me hard. I feel weaker day-by-day. At first I thought it's because the workouts are different from the usual and more stress out specific part of the body. But I didn't notice any improvement on my muscle size either. The fat% however is somehow also increasing. Now I feel a bit unmotivated...
So, what is actually going on here? Did I make any mistake or miss something? Should I change back to my old full-body routine (if this is the case, I might improve the regimen by incorporating the barbell tho)? As the fat% increase, did I unintentionally change my diet to unhealthier one?