Any frequent long-distance flyer can tell you about what jet lag does to their energy, sleep and awareness functions. But scientists who exposed hamsters to frequent jet-lag-like conditions — equivalent to flying from New York to Paris every three days — found that it affected neuron birth in the hippocampus, and likely the related problems hamsters had with finding desirable rooms in a maze and other memory tasks.
Jet Lag May Cause Long-Term Memory And Learning Problems
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After four long years, the Rugby World Cup tournament is back! Back! BACK! Over one-and-a-half gruelling months, the 20 best teams in the world will collide in 48 action-packed matches to determine a single, uncontested champion. Will the mighty All Blacks reign supreme once again? Will Australia claim its first victory of this century? Will host country Japan surprise everyone and take out the cup? Here's how to watch all the action from the 2019 tournament in Australia - live, online and free.