I'm thinking about a jailbreak and doing a 30-45 minute post-work ride on Tuesday. An easy "test the waters" effort of 115 bpm. I am guessing that might be my new 75% if my new max is 150 bpm. The PA said I could ride but wanted me to do it indoors on a trainer. I'll stay close to my start by riding no more than 3 miles away then returning etc.