The 37-year-old actor appeared light on her makeup in the video she posted. Biel sported a grey and black sweatsuit with red accents, the caption to the post read, "When the team turns it ON for the @gaiam camera."
Husband Justin Timberlake was quick to comment on Biel's post "Squad!" with a heart-eyes emoji.
This marks Biel's first social media post since Timberlake issued a public apology to Biel and his family on December 4, after headlines buzzed about him and his upcoming flick Palmer co-star, actor Alisha Wainwright, were seen holding hands at a New Orleans bar late last month.
Justin and Jessica have been married since 2012.