Ask A Pro: Why Does Swimming Make Me So Sleepy?]

By Samantha McGlone via Triathlete magazine

Q: After my morning swim practice I am absolutely exhausted, more so than in any other sport. Why does swimming make me so sleepy?

For my entire triathlon career I have wondered the exact same thing! Growing up as a runner, I would usually feel great after a long run—my body was tired, but I was mentally alert. Once I started swimming, I could barely keep my eyes open after practice. My organic chemistry grade from the year I swam with my college swim team can attest to this fact—unfortunate scheduling placed this (already tedious) class immediately after our two-hour morning swim practice. I would race to lecture straight from the pool at 8 and, once the adrenaline of sprinting across campus wore off, it was only a matter of minutes before my eyes drooped and my head started bobbing like a chicken.

Layers of Protection Around Aquatic Environments to Prevent Child Drowning

from the National Drowning Prevention Alliance

Written by NDPA's Education Committee

Approved by NDPA Board of Directors: January 21, 2009

Revised March 25, 2011


This position paper addresses the National Drowning Prevention Alliance's definition of "layers of protection" and how this concept can be utilized in aquatic environments to aid in the prevention of childhood drowning. The NDPA recognizes that multiple strategies are necessary to prevent drowning. The term "layers of protection" is one way to classify the majority of strategies directly affecting aquatic environments. Other important prevention strategies, such as community education, legislation, local enforcement, and public awareness, are not addressed in this position paper. This position paper is intended to be a general overview for use by safety professionals, educators, community leaders, parents, caregivers, and members of the media. Additional papers discussing more details on individual "layers" addressed in this paper will be forthcoming

Solar Hot Water Lessons Learned: 1977 til Today

The following is an exerpt from a book about the history of solar heating and swimming pools:

Solar pool collectors are made from polypropylene. To create a 4' x 12' pool collector, 26.6 pounds of natural gas and petroleum are used. If this gas and oil was burned, it would create 410,800 BTU's. A 4' x 12' pool collector will produce 410,000 BTU's in less than TEN DAYS. The BTU conversion to KWH's in one year from ten 4' x 12' collectors is 43,262 KWH. At $.10 per KWH, this results in a savings of $4,326! Natural gas at $1.00/therm or LP gas at $1.40/gallon would cost $2,163 to generate 410,000 BTU/day/year. A solar pool heating system with

ten 4' x 12' collectors installed with an automatic comfort control, would cost from $4,900 to $5,800. Clearly, solar pool heating is the most cost effective use of solar energy on Earth. Pool collectors will typically last from 12 to 20 years - more than two to three times the life of a gas heater, electric heater, or swimming pool heat pump.


Hot tubs by nature should conjure up images of peace loving environmentally conscience folks who are doing their best to save the planet! However, the real nature of a hot tub is one where water is heated and in containment for a long period of time.

To keep the water in that hot tub safe and free of bacteria chemicals are needed.

Using Chlorine or Bromine

Primarily, disinfectants such as chlorine or bromine have been staples in the hot tub market for years. However, some may see these "chemicals" as something that can be harmful to humans or the environment.

In actuality the chlorine or bromine used in hot tub water care is some of the safest and innocuous chemical when it comes to water treatment. Both chlorine and bromine are categorized as "halogens" , meaning they both are formed from salt. And once they have cycled through the process of disinfection or oxidation in water they both convert back to a's kind of like the expression "from dust to dust", only in this case it's 'from salt to salt"!

As long as they are used properly chlorine and bromine are still two of the most effective and safest forms of water disinfection!

Alternative Hot Tub Sanitizers