Try the strain and sleep sliders
The two sliders on Tomorrow's recovery let you play "what if" before you train. Try a big session or an earlier night and watch tomorrow's forecast move.
Steps





Today's strain
- Runs from 0 to 21, WHOOP's strain scale.
- Starts at your strain so far today, marked so far.
- Drag it right to see what a harder day would do. The label keeps showing what you've already done, like "4.3 so far".
Sleep tonight
- Runs from 4 to 10 hours, in 15-minute steps.
- Starts at your usual sleep, shown as usual 7:12 (your number), the average of your last 14 healthy nights.
- Drag it right to see what an earlier night could give back.
As you drag, the ring, the likely range and the chance of green under How it's been doing all update.
Good to know. The sliders are just for trying things out. Nothing is saved, and they go back to your real day the next time the page loads. Be green tomorrow always works from your real day, not the sliders.
Questions
Why does more strain lower tomorrow so much for me?
The forecast learns from your own history. If hard days have usually cost you a lot of recovery, the strain slider will move it a lot.
Can I move the strain below what I've done today?
Yes. The slider goes down to 0, so you can see what a lighter day would have looked like.
What sleep should I aim for?
Open Be green tomorrow. It gives you a sleep target and an asleep-by time.