Smiling, makeup-free, a little flushed, and in a snazzy gray-print sports bra and leggings, Kaley made sure eyes were on the pants.
Kaley was snapped grinning as she burned her calories.
Since parting ways from her husband, fans of the show have been begging Kaley and Johnny to get back together.
Trainer Ryan Sorensen was putting the star through her paces, with the next photo coming as a joyful showoff.
As usual, though, the girl behind Penny was going unpaid as she revealed her leggings to have a phone-holder.
The series sees Kaley play Cassandra Bowden, a woman waking up hungover in a Dubai hotel room and next to a dead body.