Swimming for me. But dont have access to a pool all the time, so I have to opt for elyptical. I was running earlier this year, but it started to get hard on my knees and ankles.
I have been doing my cardio with my HR at around 135 in the so called
"Fat Burning Zone" (23 yrs old) but I am going to start doing 30 minutes 6 days per week (45 min on non-workout days) at a HR between 160-170. Why not? I'm burning more calories right???