Between work, family, activities and schedule changes, having a quick and effective workout ready to knock out can be very useful. High-intensity interval training (HIIT) is designed to challenge the entire body and push intensity limits.
While the intensity is meant to be high, adjusting for the energy level you have and/or injuries you may be experiencing is perfectly appropriate and recommended. HIIT can be either high- or low-impact or a combination
of both.
The following HIIT workout can be completed in 30 minutes and requires no extra equipment. When applicable, dumbbells may be used to add variety and challenge to certain exercises. The exercises are based on time instead of repetitions, as individual speeds will vary based on your fitness level.