Nobody is sure why dogs sleep so much. The amount of sleep that an animal needs depends upon its species. Horses and cows may sleep only three or four hours daily, because they require long hours of grazing to supply their bodies with sufficient food. Bats and opossums may sleep closer to 20 hours. The various breeds of dogs also seem to have different sleep requirements. Some very large breeds of dogs, like Newfoundlands, Saint Bernards, and mastiffs, often spend a great deal of their lives sleeping â perhaps up to sixteen or even eighteen hours a day.
When it comes to eating before exercise, it's all about timing. No matter what time of day you choose to exercise, make sure to plan your workout two to three hours after your meal. Going overboard with too much food right before a workout will leave you feeling sluggish and can lead to stomach discomfort.
Most people can eat small snacks right before and during exercise. The key is how you feel. Do what works best for you. Snacks eaten soon before exercise probably won't give you added energy, but they can help keep up your blood sugar and prevent distracting hunger pangs.Good snack options include: 1  Energy bars.e careful not to overdo it when it comes to how much you eat before exercise. The general guideline: 1  Large meals. 2  Eat these at least three to four hours before exercising. 3  Small meals. 4  Eat these two to three hours before exercising. 5  Small snacks.