In the lod days they used to fight lots and lots: A sample from the record of HoF member Fritzie Zivic, from 1938. He fought on the following dates; 1/1, 2/14, 3/7, 3/21, 4/12, 5/29, 6/13, 6/20, 7/9, 7/12, 8/2, 8/12, 8/22, 8/26, ...you get the idea. They learned their trade, got hit less, and didn't come out gunning for the KO every instant. You box, take your time...and get better at boxing. It has ups and downs; personally, I'd fight every day which isn't wise ... Starting out, every 60 days is probably good, gives you time to learn new things between fights.