I only have 1kg dumbbels at home so I just do hundreds of curls

>>36764751

you are indeed wasting your time. completely.
unless you are training to become the man who can curl 1kgs a million times in an hour

>>36764767

in all seriousness, I know I'm not gonna get big by spending all day shitposting on /fit/ while doing curls but it does build the tiniest bit of muscle right?

somebody answer por favor

>>36765013
Não.

>>36764751
Get heavier weights but do smaller reps.
You're effectively doing nothing.

>>36764751
You're wasting your time. Everyone has told you that, the question has been answered. No muscle will be built because that is insufficient weight to stress the muscle enough to cause microtears. We're all gonna tell you the same thing.

>>36764751
I used to be in the same situation with 1.5 kg dumbells, I went up to 400 reps before realising I had no arms yet and it is bullshit, I did sweet a lot so I guess at some point it becomes cardio, it did help me to start losing weight trough but you're better with bodyweight stuff

>>36765194
If it's doing anything it's building muscular endurance but even then that many reps is overkill.

>>36764751
At the very least fill a backpack with some water bottles and curl that for fucks sake.

>>36764751
You are literally just burning calories. And not many of them. Deathgrip self service alternating hands all day would likely build better arms and get you moar shredded