I am very experienced in lifting…for the past 7 or 8 years…although cardio has been a while since I have done any sort of intense cardio…although I have done plenty of 70-80% heartrate cardio, just not very frequently in the past 3 years…although in my past I played soccer several times a week and had plenty…so that sprinting has been a while since I have done any…
aside from not doing any sprinting work in the past few years…what do you think physically happened there…I have had times in the past when I really pushed myself and would run a mile without stopping and would lay down and crash for 30 mins just letting my heart rate come back off the ceiling…I was trained fairly well then…