Humans ferment lactic acid in muscles where oxygen becomes depleted, which is why sometimes if you finish a run and don't stretch soon you have have discomfort. <span />
I hate to ask and sound stupid, but the drug or the basic chemical?
Tundra
Tundra is a biome that is located in the coldest regions of the world. This is characterized by short growing seasons and low temperatures. The plants growing in these regions are short perennials.
Hope this helps :)
Have a great day!
