If I do 10 ( max is 20) pushups are they aerobic or anaerobic?If running is aerobic then why does it produce a burning sensation?
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The burning has little to do with anything here and can happen with any muscle contraction/exercise, but it is *not* lactic acid. We really aren’t sure what causes muscle pain during exercise. We aren’t that sure of what causes delayed-onset muscle soreness (DOMS) either, but we still know it’s absolutely not lactic acid.
Simple answer: if you’re working out at roughly 65% of your maximum intensity (check an NCSA chart–10 reps is NOT 50% of 20), so you are comfortably in low-intensity aerobic exercise. Though all 3 energy systems are always active. And when you initiate your first pushup, your anaerobic systems (PCr and glycogen) are providing most of the energy.
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