Keep a resistance band in your office and do one set of bicep curls in the morning and one the afternoon for 3 minutes.

FORBES: Here Are Some 100-Calorie Workouts For Your Work Day

One routine targets all muscle groups by lifting heavy weights through movements like squats, bench presses, bicep curls, tricep extensions, calf lifts and lateral pull-downs.

WSJ: When Time Allows, Taking a Whack at a New Sport

She suggests carrying a resistance band with you to do strength exercises such as bicep curls or tricep extensions while waiting in a doctor's office.

WSJ: Before Outer Space, He Conquers Continents