Jessica Biel Unveils Workout Routine—and Justin Timberlake Reacts

Jessica Biel, Justin Timberlake Share Rare Family Photos with Sons in Father’s Day Tributes

Jessica Biel is rockin' that body.

The Better Sister actress showed off her latest workout routine, which featured countless core and strength moves throughout a 45-minute session.

"Full-body, start to finish," Biel captioned a June 28 video posted to Instagram in collaboration with her personal trainer Ben Bruno. "Mobility, strength, cardio... and yes, I’m definitely feeling it today."

In the clip, the 44-year-old dons a white tank top, gray high-waisted sweatpants, white sneakers and a black baseball hat as she works with dumbbells of different weights to do a series of mobility and strength exercises as Bruno guides her through the workout.

In the comments of the post, Biel's husband Justin Timberlake joked that he was saying bye, bye, bye to his own fit physique.

The "Like I Love You" singer—who shares sons Silas, 11, and Phineas, 5, with Biel—wrote, "Literally eating onion rings while I watch this."

But while Timberlake may joke about his routine, the *NSYNC alum also trains with Bruno. Indeed, pinned to the top of the trainer’s Instagram page is a video of Timberlake doing what Bruno described as a "very, very impressive" upper body and core exercise two years ago.

"He’s been working super hard to get his body right for his upcoming world tour next month," Bruno captioned the 2024 post, "and as a trainer it’s very cool to see a guy in Justin’s position in life pushing himself like this in the gym."

As for Timberlake’s onion ring confession, he and Biel never hesitate to engage with the other on social media, whether it’s with a heartfelt post or flirty comment. In fact, Biel used Father’s Day as an excuse to praise Timberlake as a parent.

"Happy Father’s Day to the dad who is always ALL in,” she captioned a June 21 Instagram post. “The one who turns ordinary moments into adventures and bedtime into comedy hour. The dad who is not afraid of the tears, the tender, quiet times, or the hard conversations."

Axelle/Bauer-Griffin/FilmMagic

"Watching you be a father is one of my favorite things,” the 7th Heaven alum added. “Our boys are so lucky to call you Dad.”

Keep reading for more about Biel and Timberlake's family...