Set reminders to stand up, stretch and do simple strength exercises throughout the day. Even if you don't have time for a full strength training workout, every little bit counts. Try this daily routine: Spend a few minutes doing dynamic stretches when your morning alarm goes off, followed by three sets of 10 lunges at 9 a.m., three sets of 10 push-ups at noon, three sets of 10 squats at 3 p.m. and then some light stretches before you hit the sheets at night.