FlexBoXX: Powered by Christina Hammer

Improve your balance, flexibility, and strength as you help relax your muscles.

P90X® is a complete 90-day home fitness system designed to get you in the best shape of your life. 01 CHEST & BACK - Targeted strength and definition workout 02 PLYOMETRICS - Explosive jumping cardio routine 03 SHOULDERS & ARMS - Potent combination of pressing, curling, and fly movements 04 YOGA X - Combines strength, balance, flexibility, and breath work 05 LEGS & BACK - squat, lunge, and pull for a total-body workout 06 KENPO X - Intense cardiovascular workout with punching and kicking 07 X STRETCH - Achieve a higher level of athleticism over a longer period of time 08 CORE SYNERGISTICS - Build and support multiple muscle groups while conditioning your body. 09 CHEST, SHOULDERS, & TRICEPS - Target both large and small upper-body muscles 10 BACK & BICEPS - Flex those powerful biceps and focus on toning and tightening these showcase arm muscles. 11 CARDIO X - A fun, low-impact cardio routine 12 AB RIPPER X - Sculpt the six-pack abs of your dreams

Resistance-plus-intervals for a full-body burn.

An hour-long workout with a BDSM theme on a NYC rooftop, taught by a variety of instructors.

A fun, low-impact cardio routine that will leave you feeling lean and mean.

Applying the same principles as Chest and Back, you'll superset these muscle groups to exhaustion. As you'll be using smaller muscles, this might prove slightly less of a struggle - but that doesn't mean you won't be fully maxed when this workout is said and done. Just be sure to keep your form during the latter part of the routine, when you'll be tempted to cheat your range of motion. Maintaining good form is critical for proper muscular development and preventing injury, so stay strict and get ripped!

Keep your heart rate up and your metabolism revved high long after the workout is over.

Isa, 25, is an influencer:1,5 million followers on Instagram. Too bad that she gets busted with illegal substances for athletes, robbing her of authenticity - a dramatic decline in her career.

Superset two of the body's largest muscle groups for a lactic acid bath like no other! You'll be fully pumped five minutes into the program, and your muscles will beg for mercy the rest of the way. Your body will learn how to keep it together under duress as you struggle to meet your target number of reps during round two. And if you feel a little queasy after your set, at least you'll know you're not alone.

Hinako returns to our TV screens, this time showing us how to sleep.

An exercise video with instructor Traci Lords warming up with various aerobics and stretch exercises.