The location of the hole (perforation) in the eardrum also effects the degree of hearing loss. If severe trauma (e.g. skull fracture) disrupts the bones in the middle ear which transmit sound or causes injury to the inner ear structures, the loss of hearing maybe quite severe.
1 Resting 1-3 minutes between sets is probably ideal for you. 2  The higher your training intensity is for a given exercise and/or the more demanding it is on your body, the more you should stay nearer to the 2-3 minute range.
It is a good rule to use because various studies have indicated that 60-90 seconds of rest is enough to recover about 90% of your muscle's capacity to do work. There are schools of thought which say you should only rest about 30 seconds in between sets. Let me tell you a little something about resting only 30 seconds in between sets. You tire yourself out very quickly! Before you know it, you're having to crawl around the gym in order to complete your workout. That is NO good for strength. I have a friend who used to train 6 days on/1 day off for two hours a session and resting only 30 seconds in between sets.