Eating your way through a breakup

This weekend my boyfriend and I broke up. Even though it was probably the best thing for both of us, it's still really hard. While I've had my fair share of breakups in the past, I seem to forget the emotional toll they take. For 3 days I've been bouncing between, comatose, angry, eating almost an entire jar of nutella, then eating nothing, crying for hours on end, not sleeping and wishing it would all just go away. I realize these are all natural emotions to be feeling, but it's been hell. I know I need to get a grip. I know my health is important, but eating well & keeping up with my exercise has never felt so daunting.