This weekend marks one year since I made a lifestyle change to include regular HIIT workouts into my weekly routine. It all started on Black Friday of last year when the (affiliate link->) Bodyboss Method was having a sale on their 12-week HIIT program. And although I finished that program a long time ago, I have continued to incorporate other HIIT workouts into my routine and consistently exercise five days a week. This is the first time that I’ve stayed consistent for a full year! If you’re looking to make a lifestyle change, here are  seven things I’ve learned in the past 12 months that have helped me make the…