This worked for me: Eliminate caffeine, sugar, all processed foods, no grains. Take at least one full day off between workouts and rest. Get plenty of sleep. Reduce mental stress, don't get anxious or angry over anything. Spend time meditating or listening to quiet relaxing music everyday. Supplement with fish oils.

Be strict with your bed time - early to bed every night no matter what. Try and get out every day in the open air/sunshine, even for an hour or so at lunchtime. Drop HIIT for the timebeing if you are having terrible cortisol issues. I dropped all forms of training except Callanetics and walking, still continuing to lose body fat, especially that dreaded cortisol-induced sogginess around the midsection. Learn some form of meditation - even take a couple of minutes every few hours or so to concentrate on your breathing.

If you got a lot of things on your mind, write them down instead of going over and over everything in your head, stressing you out further. Take a few minutes of "you" time each day where you aren't obliged to anyone else, just to relax.

Melatonin oxytocin N acetylcysteine PQQ high dose fish oil resveratrol.......and lots of green tea or L theanine .....