Bodybuilding triceps exercises and anatomy

[SOULJAJOE010]

hey simplistic, i am doing low rep excersices for upper body which is about 4 reps in good form. I am not getting any lactic acid or pain feeling, am i still building muscle?

[gigistekno]

thanks for this , can you tell me the name of that book plz?

[slimplistic]

@gigistekno Strength training anatomy by Frederic Delavier.