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This table is based upon a dog's Resting Energy Requirements or RER. The RER is the basic amount of energy that a dog would use in a day while remaining at rest. The formula to calculate RER for animals between 2 and 45 kg (5 - 99 pounds) is: RER in kcal/day = 30(body weight in kilograms) + 70. Any activity or variable other than rest will require an increase in energy (RER) and an increase in calories to meet the energy needs. Realize that these numbers are not a reflection of maintenance calories but of resting energy levels.
2. Determine Your Resting Heart Rate. Take your pulse before you get out of bed in the morning. Do this for several days in a row to get consistent readings. 3. Calculate Your Heart-Rate Reserve. Subtract your heart's resting rate from your maximum rate. For example, if you are 40 years old, subtract that number from 220; your maximum rate is 180. Next, subtract your resting rate, 80 in this example. Your heart-rate reserve is 100 beats per minute. This heart-rate reserve represents the cushion heartbeats available for exercise. 4. Calculate Your Aerobic Training Heart-Rate Range for Fat Burning. This fat-burning range will lie between 50 and 75 percent of your heart-rate reserve. Using the example above, 50 percent of 100 beats per minute is 50. And 75 percent of 100 is 75. Next, add your resting heart rate to both numbers: 50 + 80 = 130 and 75 + 80 = 155.