What would be another way of saying "It'll do more harm than good" but in the context of "it'll do nothing for you?" Here's some context.
The common mistake, however, is believing that only lifting weights multiple times a day will get us to where we want to be. This is wrong, and unfortunately, it may even do nothing for you.
I'd like to rephrase this to match and compare like "Nothing more than something" but that sounds really stupid.