Get in a workout whenever or where ever you are! Seriously, there are times when I am folding laundry and I start to feel a small ball of frustration because I know I have something else to get done right after...So I see how long I can hold a squat or I do calf raises while folding. If I can't workout (in a grocery store, any place of worship) then I envision it. The more I envision it the more likely I am going to do it.
And if all else fails, count that day of in activity as a rest day.
One of my favorite 5 minute workouts:
Push ups 50 secs work 10 sec rest
Jumping Plie Squats 50 secs work 10 sec rest
V-Ups or Sit Ups 50 secs work 10 sec rest
Burpees 50 secs work 10 sec rest
Mountain Climbers 50 secs work 10 sec rest
If I have the time, I do as many sets as possible; however, if you only have 5 minutes, this is a nice little routine.
Hope this helped someone! Hugs!