Justin Timberlake is bringing SexyBack again with a buff physique in his film comeback.

For his role in Fisher Stevens' new Apple TV+ film Palmer, which he began filming in late 2019, the 38-year-old pop star and actor set a goal to gain 15 pounds...of muscle. On Thursday, Jan. 28, his personal trainer, Ben Bruno, posted an Instagram video of Timberlake strength training with a landline press, calling him a "beast."