Anyone ever do (or attempt) a Whole30?

I'm currently attempting one (I'm on day 8) and I feel so awful and weak. I haven't been able to workout for 5 days! Every time I try I get lightheaded and shaky. I'm hungry ALL THE TIME, even though I know I'm eating enough.

I did this because it's "supposed" to give me more energy and make me feel stronger during my workouts, but I feel like it's doing the complete opposite considering I can't even workout!

Any advise/experiences?