at least 4 for fighters in their primes. fighters should take advantage of their primes. i think rory macdonald thinks this way; i know koscheck thought this way, too.
i dont fight so i cant truly bitch, okay? just getting that out of the way.
but fighters are taking too much time. i have a feeling that these 10-week camps are just too much. there's always so much emphasis on timing because fighters want to peak physically and have sufficient time to carefully cut weight. i'm not offering any alternative, because i know jack shit about the human body, but i have a feeling that fighters can get into shape and fight after 4-6 weeks. i think it's the coaches who emphasize the perfect camp and act like masters of the human body that may be drawing things out.
i dont want it to be like matt hughes, training 2 weeks for sherk, but fighters should try to get away from needing the perfect 8-10 week camp, getting injured/cut around the 4 week mark, taking 8 months to rehab/gain weight, and booking a fight 5 months down the road.
my only advice is to take advantage of being in shape, take advantage of winning clean with no injuries, and stay in shape sometimes. somebody who is young and has just walked through his opponent with no harm done should stay in shape and try to fight very soon. kinda like gsp, rory, and hendricks.