human
I'm looking for a new way to get in shape.
assistant
I suggest you try HIIT (High Intensity Interval Training). It's an effective way to get fit quickly and can be done at home or outdoors. HIIT involves alternating short bursts of intense activity with rest periods, so it's great for people who don't have much time to exercise. You can find more information about HIIT here: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4687887/.