Your summer sweat session is here — are you up for the challenge? For a quick but effective workout that'll build heat in no time, this HIIT class wraps cardio and full-body strength training into a single 30-minute session. Led by PS Fit trainer Ashley Joi, this is the perfect workout to help you shake off the summer slump and get those endorphins flowing all through the warmer months. Although you don't need any equipment to follow along, this HIIT is not for the faint of heart. To shake up your fitness routine and infuse some joy into your next workout, give this high-energy HIIT class a try.