Skip to content

We have launched new products adopting our new design concept "Authentic and Sustainable".

We have launched new products based on our new design concept "Authentic and Sustainable."

Language
  • 日本語
  • English
寝具のイワタ 寝具のイワタ 寝具のイワタ
Search Account 0 Cart
  • unbleached / Subscription
  • Items
    Duvets / Comforters
    Duvets / Down Comfoertes Down Blankets Others
    Mattresses & Mattress Pad
    Camel Hair Pad Mattress Pads (All-year) Mattress Pads (Summer) Mattress Pads (Winter) Japanese Mattreses Japanese-style and Western-style room
    Beds
    Mattresses Bed Frames C-couch Daybeds
    Washable Pillows
    Sheets & Covers
    Sheets & Covers Duvet Covers Pillows Covers
    Others
    towel Warmer Support Pillows Mask Laundry Detergent NEZEN Others
    Remaking
    Remaking / Our Products Remaking / Thired-party
    Read More
    Innocent RENMEN project Bed Frames made from Japanese Woods Camel Hair Linen Cotton Down
    unbleached
    Duvets / Comforters Mattresses & Mattress Pad Pillows Sheets & Covers Mattresses Others
  • Duvet / Down Comforters
    • Duvet / Down Comforters
    • Down Blankets
    • Others
  • Mattress Pads & Futon
    • Camel Hair Pad
    • Mattress Pads (All-year)
    • Mattress Pads (Summer)
    • Mattress Pads (Winter)
    • Japanese-Style Mattress
    • Japanese-Style and Bed-Compatible Mattress
  • Beds
    • Mattresses
    • Bed Frames
    • C-couch
    • Daybeds
  • Furusato Nozei
  • Our Shops
  • Journal
  • Event
    • Work Shop
    • IWATA Accommodation plan that delivers a good night's sleep
  • Our Vision
  • Customer Reveiws
  • Contact Us
Subtotal
¥0
Shipping, taxes, and discount codes calculated at checkout.
Your cart is currently empty.
  • unbleached / Subscription
      • View all
      • Duvets / Down Comfoertes
      • Down Blankets
      • Others
      • View all
      • Camel Hair Pad
      • Mattress Pads (All-year)
      • Mattress Pads (Summer)
      • Mattress Pads (Winter)
      • Japanese Mattreses
      • Japanese-style and Western-style room
      • View all
      • Mattresses
      • Bed Frames
      • C-couch
      • Daybeds
    • Washable Pillows
      • View all
      • Sheets & Covers
      • Duvet Covers
      • Pillows Covers
      • View all
      • towel
      • Warmer
      • Support Pillows
      • Mask
      • Laundry Detergent
      • NEZEN
      • Others
      • Remaking / Our Products
      • Remaking / Thired-party
      • Innocent
      • RENMEN project
      • Bed Frames made from Japanese Woods
      • Camel Hair
      • Linen
      • Cotton
      • Down
      • View all
      • Duvets / Comforters
      • Mattresses & Mattress Pad
      • Pillows
      • Sheets & Covers
      • Mattresses
      • Others
    • View all
    • Duvet / Down Comforters
    • Down Blankets
    • Others
    • View all
    • Camel Hair Pad
    • Mattress Pads (All-year)
    • Mattress Pads (Summer)
    • Mattress Pads (Winter)
    • Japanese-Style Mattress
    • Japanese-Style and Bed-Compatible Mattress
    • View all
    • Mattresses
    • Bed Frames
    • C-couch
    • Daybeds
  • Furusato Nozei
  • Our Shops
  • Journal
    • Work Shop
    • IWATA Accommodation plan that delivers a good night's sleep
  • Our Vision
  • Customer Reveiws
  • Contact Us
Home / Journal /
快眠のための習慣

bath and sleep

Oct 17, 2021

Japanese people love baths. Depending on how you get into it, your sleep may become better or worse. Bathing also has the effect of relaxing your body and mind, and if you can relax, it will be easier to transition from wakefulness to sleep.

1. Soak slowly in lukewarm water.

When you warm your whole body in a lukewarm bath, your peripheral blood vessels dilate and blood circulation improves. As heat dissipates from the surface of the skin, the temperature inside the brain and body tends to drop. Before going to bed, it's a good idea to soak in slightly lukewarm water at 38 to 40 degrees Celsius for about 10 to 20 minutes. If you feel cold at 40 degrees Celsius in winter, try raising the temperature a little.

The best time to take a bath is 30 minutes to 1 hour before bed. It's time to go to bed when your body temperature, which rose during the bath, drops. If you take a bath early in the day, you won't receive the benefits. After you get out of the bath and take a breather, head to bed.

Bathing improves blood circulation and promotes sweating. What's more, your body loses about a glass of water while you sleep. After bathing, drink some water before going to bed. This is to replenish the water you lost while bathing in preparation for sleep.

2. A bath that is too hot has the opposite effect, so make sure it does not exceed 42 degrees Celsius.

Taking a hot bath may make you feel refreshed, but it actually has the opposite effect on your ability to fall asleep. If you soak in hot water above 42 degrees Celsius before going to bed, your body temperature will not come down easily even after you go to bed, and your sympathetic nervous system will become more active, making you dizzy and making it difficult to fall asleep.

If you really need a hot bath, one idea is to take one in the evening. If you take a bath up to 3 hours before going to bed, even hot water will not have a negative effect on your sleep.

3. Take a hot bath in the morning and keep it short.

If you take a bath in the morning, the opposite is true. Taking a short hot bath will increase your alertness. Let's quickly finish it with ``Crow's Water''. Taking a slow soak in lukewarm water in the morning will make it harder to wake up. Even after you wake up, you may end up feeling sleepy again.

Even a hot shower or shampoo in the morning can be enough to wake you up. Use it proactively when you wake up feeling unrefreshed.

Related article: List of lifestyle habits that lead to good sleep

bath and sleep


More from: 快眠のための習慣
Back to Journal

Explore more

  • 寝具の選び方
  • 快眠のための習慣

Featured product

Bestseller
イワタ キャメルピロー 全体を斜め上から撮影。生成色の綿100%生地・フラットな形状の枕。側面にIWATAラベルとOEKO-TEXタグが見える。
Camel Pillow
from ¥24,200 from ¥24,200

Featured product

Supporter Pillow
¥19,800 ¥19,800

Featured product

unbleached Unit Feather Pillow
from ¥24,200 from ¥24,200
Invalid password
Enter
  • About Us
  • Our Shops
  • Customer Reviews
  • Terms &Conditions
  • Refund Policy
  • Search
  • FAQ
  • Shopping Guide
  • My account
Get in touch
  • 03-5989-0838
  • Email us
  • Send on LINE.
  • Instagram
  • Facebook
We accept
  • American Express
  • JCB
  • Mastercard
  • Visa
Language
  • 日本語
  • English
© 2026 寝具のイワタ Legal NoticePrivacy Policy
IWATA products are now available as thank-you gifts through the Furusato Nozei system.

We will send a custom order voucher for Iwata products as a thank-you gift to those who have made a donation to Kyoto City through the Furusato Nozei system.


See Furusato Nozei
チャットで問い合わせる