I am really glad you are going to try out the Tabatas. I think you're right, shaking things up can help a lot. The biggest thing for me with them is even if you are just about to head to bed and you haven't done them yet or you missed one, just do it, it takes 4 minutes. I have done them everywhere from just before work at 7am, to after a late night on mumble at 2:30am. Remember too that if you do a workout, or you do something intense in your day, for me it was shoveling snow this past winter, that counts too as a tabata. Pushing yourself is great, but I know I can get a little OCD over it sometimes and have to reel myself in some.
Food wise we are all different. For me I just cut out everything that could possibly aggravate my system. Dairy, wheat, red meat, I never did drink but that would have definitely been on the list, pop, junk food, and overly processed foods, which includes deli meats. Now I don't expect anyone to jump on board quite as much as I did. I just think maybe doing tests to see if you feel better off something might be worthwhile. Like going 2 weeks without wheat or dairy just to see if you notice a difference in how you feel, your energy levels, how your sleeping, pooping. For me I know when I do start to re-introduce things it's going to be one at a time to see if I notice that I react to something. I already know that even a 6oz steak makes my stomach feel upset and kinda gassy, especially if it isn't a great cut. So when I do want a steak to treat myself I make sure it's a rib-eye, and I cut it in half to not have the full thing.
If you do decide to take something out be sure you are adding something in. You know what a healthy portion size is, you don't want to take out something like rice or potatoes and not add in more salad or steamed veggies. Your body still needs food to keep your metabolism going be sure you aren't skimping down to much. Do you do a shake of any kind? I find my typical breakfast these days is a protein shake with a bowl of cut up apple or pear and some carrots. Then I snack on raw almonds throughout the day along with more fruit and veggies. Things like smoked turkey or leftover chicken make great proteins for lunch. These days I don't like to go more than 2 hours without snacking on something. We have a farmers market locally that sells jerkies too, I am tempted to start making my own, but those that are non-processed home made stuff is great for an on the go snack.
More questions always welcome,