running vs. walking

[Jazziiv7i]

TweetI want to boost my cardio and use the treadmill as well as an eliptical runner. I am hitting my target rate according to the treadmill and frequently go beyond the target. Is that a bad thing? I also run on the eliptical low impact machines...whatever they're called. I'm sure my heart rate is above the target. thoughts on going beyond the target and which is better: walking or running? Thanks.

[Jazziiv7i]

TweetI meant boost my metabolism.

[beachgirl]

TweetIf you go above your target heart rate its just as bad as being below it. Its ok if you go a little above it but when you are right on thats when you are going to burn the maximum excess body fat. I would say you can either walk or run, walking is better on the joints, and the eliptical walker and elliptical trainer are both great IMO

[Jazziiv7i]

TweetHere's another question for you beachgirl: on the treadmill and those elliptical trainers it gives me the option of doing a cardio workout vs a fatburning workout. Since the cardio workout boosts your heart rate up beyond the fat burning workout, isn't it better to always do the cardio workout? Should I change it up once in a while? Which one is better for boosting your metabolism? Finally, does the body go into a different calorie burning mode if it is in cardio vs fat burning? Sorry for all the questions.

Lee

[Slightly Enhanced]

Tweeti am sorry i just don't have the time to explain in detail.

forget about slow-go cardio in the target heart rate, it is not the best and is based on a flawed principle,

do some research on HIIT -- high intensity interval training

no worries on going above your heart rate

i am out of town for the next week or so