Goosey
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I assume this is one of the reasons you do a full body routine three times a week @Silverback ; The very nature of full body routines gives a better cardio response as well as the "systemic response" I've read about???
At times my heart is beating really fast and breating is heavy, and hurts like a bitch it's the only way i know, for myself.. if i feel like i dont need to lie down i havn't worked hard enough, I feel electric the next day.