Is It Normal To Feel Down When Not Working Out?

I started working out seriously since last summer. Since then it’s become a habit and I work out 5 days a week usually. I haven’t worked out in the past 4 days and I feel like my mental health has dropped.

I mainly started working out for my mental health and to feel physically stronger.

Is this normal, has anyone experienced something similar?
Is It Normal To Feel Down When Not Working Out?
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