Courtney Wente instructs the following:
GRIT™ Cardio is a 30-minute high-intensity interval training (HIIT) workout that improves cardiovascular fitness, increase speed and maximize calorie burn. This workout uses a variety of body weight exercises and provides the challenge and intensity you need to get results fast.
GRIT™ Plyo is a 30-minute high-intensity interval training (HIIT) plyometric-based workout, designed to make you perform like an athlete. This workout uses a bench and combines explosive jumping exercises with agility training to increase explosiveness and to build a lean and athletic body.