Jonathan, I used this one: https://www.amazon.com/Big-Book-Endurance-Training-Racing/dp/1616080655/ref=sr_1_1?s=books&ie=UTF8&qid=1524757124&sr=1-1&keywords=phil+maffetone+books
Near as I can tell, any of his books will have his approach, they just have a different target audience. Same content, aimed a different direction with slightly different emphasis and new, often peripheral, info in the newer ones. One can geek out on heart rate monitoring. I did it all wrong. I occationally checked my heart rate with a phone app, got a feel for what aerobic felt like and haven’t taken my pulse since. That was years ago. I ride to enjoy, not to race, so I’m not looking to eek out every bit, just not drive myself into the ground. Seems to be working. I ride my 5 miles to the trail heads, see folks (20-50 years old) who drove their bouncy bikes there, they take off past me, but I catch them within a mile or two, them bent double, me just cranking along up the hill. When I shifted, however, it was very frustrating, because I felt like I couldn’t move at all without my heart rate going too high. My body had to recover from constantly being anaerobic. That took time. Works a charm though! With abandon, Patrick -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.