寝つきを良くするお風呂は「寝る1〜2時間前」。17の研究をまとめた答え

Q1. What is the passage mainly about?

1. AHow to clean a bathtub
2. BWhy cold water is good for health
3. CHow to cook with hot water
4. DThe best time to take a bath for good sleep

第1文で「よく眠るためのお風呂の時間」を問いかけ、全体でその答えを説明しているので D。

Q2. According to the passage, when should you take a bath?

1. AOne to two hours before bed
2. BRight before going to bed
3. CJust after waking up
4. DThree hours after dinner

Many studies say one to two hours before bed. とあるので A。

Q3. In this passage, "cools down" means ...

1. Agets warmer
2. Bgets wet
3. Cbecomes less warm
4. Dbecomes heavier

cool down は「冷える、温度が下がる」。お風呂で上がった体温が下がっていくことを表すので C。

Q1. How many studies were combined in the 2019 analysis?

1. A5,000
2. B17
3. C13
4. D10

combined the results of 13 studies とあるので C。5,000は候補論文の数。

Q2. According to the passage, what works like a switch for sleep?

1. AA rise in hand temperature
2. BA drop in the body's inner temperature
3. CDrinking water after a bath
4. DStaying in a bath for a long time

your inner temperature falls ... and this drop works like a switch for sleep とあるので B。

Q3. What can we infer about a hot bath taken just before bed?

1. AIt has the same effect as a bath taken two hours earlier.
2. BIt is the best way to fall asleep quickly.
3. CIt lowers body temperature immediately.
4. DIt may delay sleep because the body has not cooled down yet.

最終文で寝る直前だと体がまだ温かすぎると述べ、体温の低下が眠りのスイッチだと説明しているので、寝つきが遅れうると推論できる。D。

Q1. What is the main point of the passage?

1. ABathing has no effect on sleep.
2. BShowers are better than baths for sleep.
3. COlder adults should avoid bathing at night.
4. DA warm bath one to two hours before bed may help people fall asleep sooner.

メタ分析の結果として、寝る1〜2時間前の入浴で寝つきが早まることが中心に述べられているので D。

Q2. According to the passage, how does a bath help people fall asleep?

1. ABy keeping core temperature high all night
2. BBy making the hands and feet colder before the bath
3. CBy raising core temperature, which then falls as heat is released
4. DBy reducing blood flow to the skin

A bath raises core body temperature ... core temperature drops just as bedtime approaches とあるので C。

Q3. Why does the author mention that volunteers always know whether they have bathed?

1. ATo explain a difficulty in interpreting the results
2. BTo prove that baths do not work
3. CTo show that participants were tricked
4. DTo recommend longer baths

so expectation and relaxation are hard to separate from the effect of heat とあり、結果の解釈の難しさを述べているので A。