The Vegetable World's Ugly Duckling: Celeriac. Celeriac -- also known as celery root, knob celery and turnip-rooted celery -- is cousin to anise, carrots, parsley and parsnips. In winter, it's a great alternative to potatoes and other starches. Jack Staub.
As part of their 60 or more minutes of daily physical activity, children and adolescents should include muscle-strengthening activities, like climbing, at least 3 days a week and bone-strengthening activities, like jumping, at least 3 days a week.
For beginners, most experts recommend at least 20 minutes of exercise three times a week. These 20 minutes can be a combination of four 5-minute sessions of exercise, two 10-minute sessions or 20 continuous minutes. Just doing something is better than no exercise at all.