Answer:
run a 5k in three weeks
Explanation:
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The reason that you can tell that it was chemical is because you can see the bubbles forming. This means that it is giving off a gas.
Push ups Lifting Sit ups etc
Protein digestion would be more difficult because of that buffering action of sodium bicarbonate on the stomach acid, which alters the optimum pH for the action of pepsin, a major protein-digester