very nice indeed :-)

A question

I train (powerlifting) my upper body on mondays.
Sometimes, on thursday i'm still sore.
But as I do that workout 2 times a week I still do it.
It's not that I can hardly move or something :-) but it just hurts a little (but it's not pain I dislike :-))

so my question
Is it bad to train that 2nd time. Should I rest more so I grow more? Am I throwing my hard earned muscles away?

tnx