The jury always seems to be out on rest days, with different people recommending different things. Should you skip the gym if you feel rubbish, or just power through like a trooper? And how many rest days should you have per week? Either way, one things for sure: you do need rest days, especially between strength sessions or sessions that target the same muscles again. You’re seriously compromising your safety by overdoing it. Even if you feel okay, your muscles will still be recovering, and wont be able to perform to the maximum until they’ve been rebuilt.