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>YOU can increase the size of your muscles by pumping iron and improve your stamina with aerobic training. How come? You increase the size of the muscles by li

by lukasm 11y ago

>YOU can increase the size of your muscles by pumping iron and improve your stamina with aerobic training. How come? You increase the size of the muscles by lifting heavy.

tingol 11y ago
That's what pumping iron means.
- lukasm 11y ago
  I though he meant Fe
  - mhb 11y ago
    Great movie: https://www.youtube.com/watch?v=zZ8aqP2NWk8 https://www.youtube.com/watch?v=zZ8aqP2NWk8