Is it normal to have really bad fatigue after the first work out in a couple of weeks? I didn't do much exercise over Christmas. Yesterday, I went to my first bootcamp for the year and since then, I have felt incredible exhausted, to the point where simple tasks, like making lunch feel like an immense amount of effort.

I slept for about 2 hours during the day yesterday, and got about 9 hours last night, but I am still feeling like a sloth.

Is this normal? And what should I do to try to raise my energy?