I've recently gone from working out at home to working out at the gym. I weigh about 145lbs and I'm 6ft, so I'm aiming to pack on another 10-14lbs before the end of the year.
Currently I do a full body workout mixed with interval training for cardio, and I do this 3 times a week in the gym (Monday, Thursday, Saturday). I've recently read that I should be giving my muscles about 5-7 days rest time before working them again, so if this is true that would mean I would only be having 1 workout per week (plus cardio in another couple of gym sessions).
This strikes me as not being enough to meet my goal, is this correct?
Would you recommend moving to an isolated training regimen, where I focus on one muscle group in each session? I've always wondered how you can rest isolated muscle groups whilst working others, for example... if I work my arms on Monday, then Wednesday I would need to work my shoulders without hitting my arms, but I don't see how this is possible?