>>76344081I don't think it matters what they increased, but I'm sure they got a bit of definition in their arms and felt a bit better about themselves. It sounds like you are suffering from decision paralysis and potentially have information overload. Just get on with something. When I started out I did glute bridges using the sofa, bodyweight squats, lying leg raises, press ups, planks, stomach vacuums and single leg calf raises on the staircase. If you get into the habit of moving and enjoy some workouts then you will increase your fitness, strength and endurance. If you've got some dumbbells then great, shoulder press, arnold press, thrusters, goblet squats, lunges, bulgarian split squats, weighted glute bridges, crunches holding a plate, calf raises while holding your dumbbell etc.
I did a dumbbell only full body workout for months and got way stronger and fitter compared to doing nothing.
Also on genetics. I've been lifting now for almost 20 years. I'm 6'2", have short legs and a long torso with long arms and a barrel chest. I've high calf insertions. I've one long and one short bicep insertion. I'm like a 6/10 in terms of facial aesthetics. My proportions are weight and I gain weight rapidly. I've always been strong so weight lifting came quite naturally to me. I hit dead/squat/bench/ohp 247/208/147/105 (kg) after 2.5 years of lifting. I'm in my 40's now and max out 220/180/130/100 although I alternate the squat and dead in my training and currently I'm squatting so it'd take me at least two weeks to get that dead back, but I'd happily pull 190 any day.
Anyway I still look like shit, but I'm doing a lot better than I would if I didn't work out. If I don't work out I immediately notice a dip in mood and I start to get some aches and pains. Don't let it hold you back, very few people have great genetics.
Also I recently had a physical testing testosterone and I'm like 690 ng/dL which is pretty much in the middle of normal.