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.
1 Do up to 5 giant sets per workout. 2  Rest between 30 and 60 seconds between exercises and between 4 and 10 minutes between giant sets. 3  A crowded gym can form an obstacle for giant and super-sets. 4  After all you need many different machines and weights and you shouldn't pause too long between exercises.