Super energetic and then super tired

Woah the past two weeks have been interesting.

for 5 days, i lay awake in the middle of the night, often catching less than 4hrs of sleep and I would last about 5days being super energetic and accumulate huge eye bags.

then for the next two days, I was so tired that I can sleep and sleep and sleep. instead of a 24hr body clock, it seems to have stretch to a week!

so weird...