Butylated hydroxytoluene (BHT), also known as dibutylhydroxytoluene, is a lipophilic organic compound, chemically a derivative of phenol, that is useful for its antioxidant properties. European and U.S. regulations allow small amounts to be used as a food additive.
Like others have said, it depends... If you're doing sets of 8-12 reps with moderate weights, rest 60-90 seconds. if you're doing high weight low rep (3-5 reps), then rest 2 minutes And if you're doing real heavy stuff like squats, deadlifts, I'd recommend at least 3 minutes.
If your goal is to build muscle, aim for 8 to 12 reps per set. However, there are a few exceptions to this rule. When training your lower body, aim for 12-15 reps per set. The same goes for your abs. Whether you want size or strength, perform 3 to 5 sets. Rest for 60 to 90 minutes between sets.