Rest days are super important because they allow your body the chance to recover

Rest days are super important because they allow your body the chance to recover, repair and rebuild.
A good rule of thumb is to alternate between strength training and cardio workouts with rest days interspersed in between.
For example, you could strength train on Mondays and Thursdays and do cardio workouts on Tuesdays and Fridays with rest days on Wednesdays and over the weekend.
Even as you become fitter, rest is still crucial since you only build strength during recovery periods, not during the workout. And never work out when you’re sick or injured. After all, your goals are consistency and longevity. 😌