A month ago, I started participating in the Whole 30 challenge. I thought that by the end of it, I'd be sick of sweet potatoes, salads, eggs, and everything else I was sitting down to eat. Instead, I'm feeling amazing, I still love all of those foods, and I've made the following health marker improvements:
5lb lost (eating as much as I want - unfortunately due to injury I've been limited in exercise) - about 1% body fat lost
Energy levels are through the roof. I feel great pretty much all the time.
For the longest time, I thought I was an insomniac. As far back as I can remember, I've been staying up until midnight and waking up groggily the next morning. Under Whole 30, I was able to stop taking melatonin about a week in, and while I do take magnesium at night now (both as a general supplement and to help sleep quality), I fall asleep naturally and easily at around 9-10PM most nights. I can stay up later if I want to (last night I did to watch The Dark Knight Rises - so good) but when I want to sleep, I can. This is a HUGE difference in my overall quality of life.
Initially I thought I was going to bring beans & possibly dairy back into my diet. I don't think I will. I feel great, and every now and then I'll allow myself to consciously make a bad decision, but it's going to be a conscious decision. I'll be eating this way 99% of the time in the future.
If you decide to give it a try, here are the two things to know: 1) the first week is the hardest, by far. The first 3-4 days especially. 2) If you're routinely feeling sluggish during the day, you're probably not eating enough fat. I've added coconut milk in my coffee and avocado with pretty much every breakfast, and since then, I've been feeling amazing - only hungry at mealtime and energy levels are consistent throughout the day.
Feel free to post in the comments if you've got any questions about the process. It's certainly been a very worthwhile investment for me.