[Seth Keena]

Hi Ryan,

Thanks for writing in.  1) HR TSS is not such a good measure for the way we/you are using TP, beyond a simple flat-ish run or cycle. The reasons why, simply put, is HR indicates only a small aspect of effort for strength work, including ME as well as anything involving vertical gain. So, to ‘calibrate’ your TP metrics to produce a meaningful fitness model we suggest some TSS scores for certain workouts,  hence the 150.

2) There are 8sets of sprints, so take the 5min between the 5. On the whole, the workout should feel like more resting than working! To be clear, each set has one, 12second rep.