Originally Posted by burnthesheep

So, if you get TSB overall from trainingpeaks, I assigned a weighting to each zone's contribution to TSS per workout. Once you've done that TSB by zone would just follow the same math they use to get it overall. The sheet just does it 6 times, one for each zone.

Then, if your overall TSS per week is lets say 400. You might have 40 for Z1, 60 for Z2, 20 for Z3, 150 for Z4, 100 for Z5, 30 for Z6. Then, over time you've got you ATL and CTL for those (the 7day and longer moving averages).

If you normally ride 400 TSS a week with that breakout but are going to do a "challenge" finisher fondo of some long distance.........I'd probably start ramping up the Z1/Z2 and see that go negative while the others go positive a bit.

It just makes no sense to me to say "to adapt I need negative TSB". Ok, but doing that might make you miss good quality work for tougher zones.

I don't feel you can track really negative TSB overall if you're not a pro and also try to have really high intensity workouts several times a week.

Saying you'll do negative TSB overall also doesn't take into account event length. Why would you want a person who normally rides a lot of Z2 club stuff who wants to do a 30 min crit have an overall negative TSB if they won't have the energy to do some very very hard workouts?

That's just my thinking. I may be wrong.

I wouldn't achieve 80/20 by trying to do 80/20 every week exactly the same. Perhaps there's weeks at 90/10 or 95/5 leading up to weeks at 60/40 or 50/50 or even heavier on the intensity right before an event.

I'd periodize the 80/20 balance.