Ok - If you want to cheat (on clean eating) here's a bit of advice for you - Do it AFTER your workout that day. UGH.
I made the BIG mistake of eating not so clean on Saturday at lunch, before I hit the gym for that day. I thought I was going to vomit throughout my entire workout. Though I started out clean - big healthy salad with loads of veggies and beans and only olive oil and balsamic vinegar, I cheated and shared some nacho chips with spinach artichoke dip, guacamole and chile queso with my daughter. While it tasted good at the time, I paid for it dearly during my workout that afternoon.
I will never, EVER, eat garbage before a workout again!