Risks of Getting Up Early

There is a proverb, "hayaoki wa sanmon no toku," in Japan.

"Hayaoki" means "getting up early," "sanmon" means "three cheap coins," and "toku" means "benefit."

That is to say, this proverb says that you should get up early because you can get somewhat benefit at least.

However, according to a recent study conducted by Dr. Kelley at Oxford University, getting up early could rise risks of various diseases and decline work performances.

Demonstration experiments conducted at Harvard University and Nevada University imply the correctness of this theory.

Since I wake up at around 5 a.m. recently, I start my work before 7 a.m., but I may have to go to bed late and get up late for health.

早起きのリスク

日本には「早起きは三文の徳」ということわざがあります。

「三文」とは一文銭（最低額の貨幣）三枚のことで、ごくわずかであることを意味します。

すなわちこのことわざは、少なからず徳（得）があるので、早起きをすべきだということを言っています。

しかし、最近オクスフォード大学のケリー博士により行われた研究によると、早起きはさまざまな病気のリスクを高め、仕事のパフォーマンスも低下させるそうです。

ハーバード大学やネバダ大学で行われた実証実験が、この説の正しさを裏付けています。

最近私は朝5時頃に目が覚めるので、7時前から仕事を開始していましたが、もう少し遅寝遅起をしようと思います。

The American version is: "The early bird catches the worm, but the second mouse gets the cheese." The first mouse got caught in a trap and died. Let's be the second mouse!

• That is to say, this proverb says that you should get up early because you can get somewhat benefit at least.
• That is to say, this proverb says that you should get up early because you can get some benefit.

  Maybe it makes more sense to say "you can always get some benefit," but I'm not sure what you meant...

• However, according to a recent study conducted by Dr.
• This sentence is perfect! No correction needed!

• Kelley at Oxford University, getting up early could rise risks of various diseases and decline work performances.
• Kelley at Oxford University, getting up early could raise the risk of various diseases and cause a decline in work performance.

  If something is acting on something else and causing it to rise, the verb is "raise," not rise.
  "Performance" in this context is with regard to work, so it's not plural.

• Demonstration experiments conducted at Harvard University and Nevada University imply the correctness of this theory.
• Experiments conducted at Harvard University and Nevada University suggest the correctness of this theory.

  "suggest" makes more sense here. Also demonstration experiments is correct, but sounds awkward and is not a phrase in common use to my knowledge.

• Since I wake up at around 5 a.m. recently, I start my work before 7 a.m., but I may have to go to bed late and get up late for health.
• Since I wake up at around 5 a.m. recently, I start my work before 7 a.m., but I may have to go to bed late and get up late for health.

  I'm not sure exactly what you were trying to say. If you mean you adjust your own work schedule, then maybe, "Since I've been waking up around 5 a.m. recently, I've been starting work before 7, but I may have to start going to bet late and getting up late for my own health.

You started your own company in college? That's amazing! Good luck with your dream!