They are fine so long as you don’t have any problems like: hypertension, vertigo, or disc issues. Though I don’t know why you would need to buy one. If you are training at home doing some good stretches such as the ones in the Straighten Up America ones, which are recommened by the WHO and other healthcare organizations. They were developed by a Chiropractor and professor at Life University in Georgia, you can stretch the back and core muscles quite effectively.
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DC student
They are fine so long as you don't have any problems like: hypertension, vertigo, or disc issues. Though I don't know why you would need to buy one. If you are training at home doing some good stretches such as the ones in the Straighten Up America ones, which are recommened by the WHO and other healthcare organizations. They were developed by a Chiropractor and professor at Life University in Georgia, you can stretch the back and core muscles quite effectively.
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DC student
They are fine so long as you don’t have any problems like: hypertension, vertigo, or disc issues. Though I don’t know why you would need to buy one. If you are training at home doing some good stretches such as the ones in the Straighten Up America ones, which are recommened by the WHO and other healthcare organizations. They were developed by a Chiropractor and professor at Life University in Georgia, you can stretch the back and core muscles quite effectively.