HIIT

(credit: CBS)

Celebrity Trainer ‘Ray’ Grayson Visits KCAL9

Grayson practices HIIT, or high-intensity interval training, to build muscle and burn fat.

CBS2 / KCAL9–06/27/2015

(credit: CBS)

Lorri Ann Codes’ Tips For High Intensity Interval Training

Want a workout that is simple, effective and doesn’t cost money? Try High Intensity Interval Training!

CBS2 / KCAL9–05/27/2014