Allowing my muscles to contract

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Reference no: EM133875109

Question

I understand movement begins with a contraction, but how does a muscle contract? What is moving, sliding or are there any important substances here that are allowing my muscles to contract?

Now that our muscles are moving, what keeps us going? What steps are responsible if I decide to sprint all out for 10 seconds, Why can I not keep this intensity up for the whole entire lap?? How does this change as I then recover and jog for 4 minutes? What is my body doing in order to make this possible?

You have me on the track and I feel my heart rate increasing, what is going on? Why is my heart rate now elevated? Is this helping? Why am I sweaty and feel out of breath, oh I think it is because my oxygen saturation dropped?

You just gave me one great workout, but its 24 hours later and now I am sore? What is going on here? I think I know it must be this thing called lactate?

You have trained me now for 4 months, Why am I able to perform 25 pushups, but when we first met I was only able to do 5? why am I now able to run a mile in under 10 minutes, but it took me 15 minutes when we first met? my VO2 max is now 45ml/kg/min is this good? is VO2 max the only thing I should care about?

Reference no: EM133875109

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