Kaley Cuoco is big-time burning off her peanut butter and jelly sandwich and doing it in skin-tight bike shorts. The 35-year-old "Big Bang Theory" alum, known for her grueling workouts, yesterday engaged in two very different kinds of sweat sessions, with both following a PB&J prepared by the sitcom star's own mother. Kaley, who updated for her 6.6 million Instagram followers via her stories, first showed off the snack her mom had prepared, one she ate before both horseback riding and hitting the gym. Check it out below.