Will Harlow talked (32 minutes in) about a Deload Week — 15 Mistakes That Stop You Gaining Muscle After 50:
You're still turning up. You're still lifting weights, but doing much less than you normally would. You might cut your workout time in half. You might cut your weights in half. You might cut your reps in half.
… you're just going in, going through the motions, then going home. … it keeps muscle on your body for that week that you're not really pushing yourself, but it also gives your body a chance to recover and rebound.
I tried that this morning and it felt good.