When you workout, your stress level increase. And your body somehow deteriorate, but with some rest adapt as the result of the training. And you improve. Then

When you workout, your stress level increase. And your body somehow deteriorate, but with some rest adapt as the result of the training. And you improve. Then you can have other stresses coming from life events, work, kids, travel, partner,... issues. If you monitor your stress with Heart Rate Variability, you can see them all having a bad effect. It could be interesting to check if the red light could help recover faster.