@naturefit_cole: Stop training your core like this! It’s bad for your back and not that effective. Use this machine instead. It’s a night and day difference for your lower back and core activation. I’ve been really consistent with it and the results are paying off! You can get your own with the link in the bottom left corner of the video. #ab #core #cardio #crunches
hey so crunches are not bad for your lower back. activation of the abdominals flood the erectors and any antagonist of the abdominals with inhibitory responses thanks to Reciprocal Inhibition. crunches actively help your lower back
2025-09-20 01:07:12
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Cindy :
I love my fly bird! I had a spinal cord injury and sit ups are really uncomfortable on my neck. This machine is perfect and feels like a full body workout!
2025-09-21 05:12:28
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Joseph Shea :
feel like that helps stretch your lower back as well
2026-02-04 17:16:01
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DevinJ :
Calf muscles!🙄
2025-11-16 07:24:52
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Jack Chambers :
😳😳😳
2025-11-02 09:36:58
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pedrocasiano41 :
👍
2025-09-25 20:00:51
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Kyle :
Is it hard on the knees?
2025-10-07 12:05:44
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