2006-09-14 11:22:42 · 9 answers · asked by Dorsuzpan 1 in Science & Mathematics ➔ Biology
in the brain, endorphines
in the muscles during running, lactic acid
2006-09-14 11:30:18 · answer #1 · answered by ? 6 · 0⤊ 0⤋
Lactic acid and Carbon Dioxide
2006-09-14 18:33:05 · answer #2 · answered by ♥Pamela♥ 7 · 0⤊ 0⤋
Due to the physical effort, you muscle will generate Lactic Acid
and as always, your respiration will generate Carbon dioxide (CO2)
2006-09-14 18:27:29 · answer #3 · answered by cd4017 4 · 1⤊ 0⤋
Endorphines which get you almost a sort of "high" that runners call "runners high"... Adrenaline, and Lactic Acid (lactic acid is the substance that makes your limbs feel heavier and heavier)
2006-09-14 18:30:56 · answer #4 · answered by toofdogger 3 · 0⤊ 0⤋
lactic acid as a byproduct of anaerobic respiration (when you don't get enough O2)
2006-09-14 18:38:48 · answer #5 · answered by anonymous 3 · 0⤊ 0⤋
Carbon dioxide (CO2)
2006-09-14 18:24:20 · answer #6 · answered by Tiramysu 4 · 0⤊ 0⤋
carbon dioxide and sweat.
2006-09-14 18:29:38 · answer #7 · answered by Anonymous · 0⤊ 0⤋
adrenilen
2006-09-14 18:26:55 · answer #8 · answered by upnorth 2 · 0⤊ 0⤋
sweat!!!
oh, and maybe endorphines.
2006-09-14 18:35:50 · answer #9 · answered by alfi1972 3 · 0⤊ 0⤋