This is the time of year when a lot of folks get the fitness f*ck its. End of year deliverables, travel plans, holiday parties and sugary (boozy!) treats everywhere can make us feel powerless over our schedules, diets and fitness goals. I get it. But rather than starting 2017 feeling bloated, fatigued and defeated consider trying one of my favorite efficient and effective high intensity interval running programs. Scrape together 20 minutes a few times per week to start burning body fat, improving your cardio endurance and building strength in your legs.