JOANNA REAGAN
Defense Centers for Public Health-Aberdeen
Aberdeen Proving Ground, Maryland
In some areas of the country, snowflakes are falling, but don't use this as a reason to slow down on your winter health plan. This is a great time to join a gym, try a new class or get into a winter sport. Winter is also a time to prevent dehydration. It is important for Soldiers to remember that their sweat rate does not change just because the temperature drops. This is because sweat rate is determined by numerous factors, including fitness level, pace and acclimatization — not just ambient temperature. Soldiers are just as likely to become dehydrated during winter workouts as summer workouts.
Relaying the message to drink water is easy in the summer, but not so much in the winter. Dehydration can occur because we feel less thirsty during winter workouts. In addition, some may overdress for cold-weather exercise sessions by wearing too many layers of clothes. They may also convert to indoor workouts during the winter and sweat more while inside.
Soldiers can check for dehydration by looking at the color of their urine. If the urine looks like lemonade, this indicates proper hydration. If it is darker and looks like apple juice or pale ale, then more fluids are needed. In contrast, if the urine looks clear, this can indicate overhydration. Other symptoms of dehydration may include drowsiness, headaches, dry skin, dizziness or nausea. Remember, don't rely on thirst as an indicator of hydration status. Usually, an individual is already 3 percent dehydrated when they become thirsty.
So, what are the recommendations for healthy drinks? Water is the best choice for rehydration because it’s calorie-free, inexpensive and easy to find. As a basic guide, an adequate intake of water from fluids and foods is 12 cups per day for men ages 19-30 and nine cups per day for women of the same age based on the dietary reference intake. For most people, about 80 percent of this water volume comes from beverages; the rest comes from food.
Sports beverages are designed to give athletes carbohydrates, electrolytes and fluid during high-intensity workouts that last more than one hour. For other folks, they're just another source of sugar and calories. If your workout consists of moderate to heavy intensity for 45-60 minutes, then a sports drink would be recommended. Examples would be activities where you have consistent movement, an increased sweat rate, heavy breathing and a high heart rate.
Try to avoid drinks that have added sugars for flavor, such as sugar-sweetened soda, sweet tea or energy drinks. One bottle of regular 16-ounce soda has about 185 calories, one 16-ounce bottle of sweet tea has about 200 calories and one 16-ounce energy drink has about 250 calories. Energy drinks have as much sugar as soft drinks. They contain caffeine to raise your blood pressure and additives whose long-term health effects are unknown. For these reasons, it's best to skip energy drinks. Over time, the extra calories add to weight gain and an increased risk of Type 2 diabetes, heart disease and gout.
For some people who are accustomed to drinking flavored beverages, water can initially taste bland. One recommendation is to try infused water. Instead of purchasing expensive flavored waters in the grocery store, infused water can be made at home by adding sliced citrus fruits or zest (lemon, lime, orange, grapefruit) or crushed fresh mint. One could also add sliced fresh ginger, sliced cucumber or maybe crushed berries for other ideas. Sparkling water with a splash of juice is another idea to increase fluids.
Other drinks to try in the winter are sugar-free apple cider or sugar-free hot chocolate. Coffee and tea, without added sweeteners, are healthy choices too. Try carrying a water bottle throughout the day to sip on at work or home. Also, try eating foods high in water content, such as oranges and grapefruit.
Winter is a great time to focus on your health. Remember, it is also a time to drink more fluids to stay hydrated and achieve your performance goals.