You body needs time to recover after your workouts. Pay attention to these signs you need a rest day, such as poor sleep, sore muscles and a high heart rate.
Rest days: When, how and why you need them
Is There Strength in Rest for Seniors? - The Senior Centered PT
7 signs you need a rest day
8 Reasons Why You're Not Seeing Results From Working Out
10 indicators that you may need to take a rest day
How to Rest Effectively: 8 Practical Tips
5 Signs You Need a Rest Day - Fitbit Blog
8 Times You Should Take a Rest Day - Health Perch
How often should you take a rest day?