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2. Snorkel (swimming) - Wikipedia

   en.wikipedia.org/wiki/Snorkel_(swimming)

   A snorkel is used to allow the user to breathe atmospheric air when their face is immersed in water while swimming or floating at the surface. [1] To work effectively, the snorkel must allow the user to inhale and exhale comfortably over an extended period, and provide a sufficient volume of air with appropriate oxygen and carbon dioxide content to maintain a sufficient and comfortable ...

3. Hot tub or cold plunge? Experts say there are benefits — and ...

   www.aol.com/lifestyle/hot-tub-cold-plunge...

   How a hot tub stacks up against taking a cold plunge — and what a new study says about the benefits of doing water therapy after a workout.

4. Hot tub - Wikipedia

   en.wikipedia.org/wiki/Hot_tub

   The earliest hot tubs were calderas in which hot stones were placed to heat the water. [citation needed] Therma in Ikaria has been a very popular place particularly for hydrotherapy ever since the 4th century B.C. [2] The remains of wrecked marble bathtubs along with a prehistoric aqueduct that have been unearthed from this area bear ample testimony of the place's popularity in the ancient times.

5. List of diving hazards and precautions - Wikipedia

   en.wikipedia.org/wiki/List_of_diving_hazards_and...

   Loss of body heat to the water or other surroundings. Water carries heat away far more effectively than air. Evaporative cooling on the surface is also an effective mechanism of heat loss, and can affect divers in wet diving suits while travelling on boats. [46]

6. Water heating - Wikipedia

   en.wikipedia.org/wiki/Water_heating

   An ordinary electric shower often but not always has three heat settings: high (5.5 kW), low (2.5 kW), or cold (0 W) to use when a central heater system is available or in hot seasons. Higher power (up to 7.5 KW) and lower power (up to 3.2 KW) versions are also made, as well as versions with 4 heat settings or a variable heat setting.

7. What is ‘toasted skin syndrome'? Heating pads and blankets ...

   www.aol.com/toasted-skin-syndrome-heating-pads...

   Skin changes can occur after prolonged exposure to any heat source, Camp noted, including laptops, heated car seats, hot water bottles, electric blankets, space heaters and heating pads used to ...

8. Scuba cylinder valve - Wikipedia

   en.wikipedia.org/wiki/Scuba_cylinder_valve

   The dip tube, anti-debris tube, or valve snorkel is a short tube screwed into the hole in the bottom of the valve body, which projects into the cylinder internal space. Its function is to prevent any loose debris inside the cylinder from getting into the outlet passages if the cylinder is inverted in use, as such material may clog or jam the ...

9. NYT ‘Connections’ Hints and Answers Today, Wednesday, January 8

   www.aol.com/nyt-connections-hints-answers-today...

   Spoilers ahead! We've warned you. We mean it. Read no further until you really want some clues or you've completely given up and want the answers ASAP. Get ready for all of today's NYT ...