High intensity is a bit of a misnomer; at my current fitness level, 200m repeats with a 1:1 work:recovery ratio are only sustainable at a rather low intensity. I’m familiar with that part of the tb2 intro. While a good anecdote about the necessity of aerobic training, it doesn’t exactly demonstrate ...

The question’s in the title, but to elaborate: How much room is there for short distance (1.5-2mile) speed work in Base Building and Green? The book says walking is okay to keep HR within limits. Does running 200m with a 1:1 or longer walking rest to keep HR down meet the same goals as LSS jogging? ...

Hello, 32M, active duty Army (mech Infantry, hence the name). I’ve used TB in the past, and am currently mid way through a cycle of Zulu I/A. Once I finish and hopefully test maxes, it’ll be time to plan a new cycle. Running is my major limiting factor now. I’ve completed base building before, using...