Intermittent fasting is my number 1. Not just because it helps me lose weight easily by taking in 0 calories for 16 hours a day, it also heightens a process called autophagy which is how the body heals. Its taken out the inflammation in my hips, my ibs is minimal and reflux is basically gone. I have fibro too and noticed a huge improvement.
My number 2 is reverse hair washing. I use Herbal Essences argon oil of morroco and have done for ages. Only difference is I now condition, massage thoroughly, rince and then shampoo! The conditioner pulls in your natural oils with it then you shampoo off the excess. My curls are more defined, frizz is gone, hair is shiner and never gets greasy. Amazing!