Jessica Biel finally gave her followers what they wanted - her detailed arm and back workout routine. Biel, 43, took to Instagram on Saturday, November 22, in a joint post with her trainer, Ben Bruno, to share her go-to exercises after fans went wild over her figure in The Better Sister. "The truth is, while she definitely does plenty of work on her back and arms, her workouts aren't split up into back day, arm day and so on," Bruno, 38, said over a clip of Biel holding onto rings and pulling her body up with her legs resting on a bench. In another clip, Biel was seen pulling on a resistance band while balancing on one arm and leg and performing crunches. Jessica Biel's Fitness Secrets: What She's Said About Her Diet, Exercise Bruno continued, "She does full body workouts that combine upper body exercises, lower body exercises, core work and a bunch of things that work everything at once to maximize efficiency." Next, Biel balanced with one foot on a bench and bent into a squat position. She worked out her arms by holding a dumbbell and lifting it. "Side note, this is also a great way to do it if you don't wanna do a bunch of extra cardio too," Bruno added. "Jess is super strong and likes to push herself, but she's not so interested in lifting super, super heavy weights." Elsewhere in the video, Biel lifted more dumbbells while leaning back and gripping onto a ring, doing pull-ups while lying down and more. "In a given workout, she does one exercise for the back, which also works the biceps, one exercise for the shoulders, and one exercise for the triceps," Bruno explained. "Plus, some other moves for legs and abs sprinkled in." View this post on Instagram Bruno also reminded followers that everyone's body fluctuates. "The super-toned physique you see on screen isn't attainable all year round. Jess knows that, so she spends most of the year working out consistently, but not crazy by any means," he continued. "If there's a time she needs to look her absolute best, she'll ramp it up for a few weeks and then go back to normal." He then shared a clip of Biel lifting herself off the ground by doing pull-ups, which was taken right before she filmed The Better Sister a year and a half ago. "In the name of transparency, she's never done this move since and has been very clear that she has no intention to do so," Bruno noted. Jessica Biel Says Toned Body in 'The Better Sister' Is 'Not Maintainable' "The arm and back workout everyone asked for is finally here!" Biel captioned the post. "Thank you to my friend and amazing trainer @benbrunotraining for all of the help leading up to The Better Sister but also for my everyday life. At the link in @benbrunotraining's bio you can get his app to do these workouts too! ♥️." Her celebrity friends and fans praised her rigorous workout routine in the comments section. "Oh just doing sitting pull-ups like it's nothing.. 😂," actress Christina Milian wrote. A fan added, "She is a beast. Those exercises are hard AF," while another commented, "She is SO strong, and form is flawless!!"