Im not professional

but according to my experience, i think i can give some advises

1) hmm seems not covering all muscles
2) if you are solely depend on dumbells, i don't think it will over work your muscles, otherwise we don't need to go to gym already (throughout my 6 yrs working out experience i never experience overtrain too)
3) if it is too light and you can do more than 15 reps then that is too light for you.

This post has been edited by daimon: Sep 19 2018, 10:51 PM

i think you can go to gym , dumbbell usually cant satisfied if you are into workout HAHA