The Time Excuse
'I don't have time' is a lie. You have time, you just don't have a contiguous 60-minute block. But you have 5 minutes before a meeting. 10 minutes before dinner.
Exercise Snacking
Research shows that breaking up exercise into small 'snacks' throughout the day can be just as effective for metabolic health as one long session. It keeps your metabolism revving all day.
Implementation
Keep a kettlebell in your office. Put a pullup bar on the bathroom door. Every time you pass it, pay the toll. 5 reps here, 10 reps there.
Consistency
It removes the mental barrier of 'going to the gym'. You are always at the gym. The world is your gym.
