This is what I did Monday morning before I left. Think of me driving for 3 hours! OUCH!!
Max pushups 2:00 minutes
Max Situps 2:00 minutes
Max Flutterkicks 2:00 minutes
Max Air Squats 2:00 minutes
Max Double Unders (practice makes perfect) 2:00 minutes (or regular jumpropes, high knees)
This is much easier if you have a timer; Gym Boss or kitchen!
No resting! Keep going, YES YOU CAN!!
Make the decision, then do something - no matter how small - toward accomplishing what you want.