Investigators studied the effect of a ten-minute exercise program that included several high-intensity intervals on older, frail mice over the course of sixteen weeks and found that these mice experienced dramatic improvements in grip strength, treadmill endurance, gait speed, and muscle mass compared with mice in a control group. If these findings apply to human subjects, then introducing seniors to this form of exercise may help them remain active and independent for longer. Journal of Gerontology A, June 2017