If you're running with a group you could all have a number and take it in turns to choose the pace, distance and recovery of efforts. 2. Hills. Hills can be used to improve speed-endurance and strength-endurance, depending on the length of the hill.
Bing cherries are the most popular sweet cherry variety produced in the United States, according to Oregon State University. The skin of this sweet cherry is a deep burgundy -- almost black -- color. Other black, sweet cherry varieties include Sam, Schmidt, Ulster, Vista, Black Republican and Black Tartarian. The recommended serving size of fresh black cherries is 12, according to Harvard University. Sweet cherries are low in calories and provide fiber, vitamin C, minerals and melatonin to your diet.
One cup of cherries has the same amount of potassium as a banana making it a great substitute when you are not in the mood for another ho-hum banana. Cherries help keep you trim Eating cherries can help you lose weight and stay trim. A cup of cherries is less than 100 calories and packs in 3 grams of fiber, which will keep you feeling full longer. Also, these little beauties contain many B-vitamins such as thiamin, riboflavin and vitamin B6; these vitamins are crucial for metabolism and convert nutrients into energy.