Do you have trouble resting because you feel guilty, think you're being lazy or not working hard enough?
The rest and recovery is built in, and there's no guilt. You push yourself in your first two phases, when your body's up for it.
This helps you feel like you've “earned” it. Eventually it comes naturally, and there's no “earning”.
I know — we shouldn't have to earn rest. But we're shifting mindsets here, and some of us need to trick our brains until the new one sticks.