Fitness for Seniors How many calories are you burning? Most of us worked for about a half century, often at strenuous physical labor, looking forward to retirement and some leisure. Now, they want us to exercise! What do they think we were doing for 50 years? Stay off the rocking chair, the recliner and the park bench, they now tell us Exercise! Move it, they add. Practically every health research report we see reminds us that we need to exercise to maintain a healthy heart, to avoid diabetes, to keep our minds healthy, to keep our limbs agile, etc. etc. etc. Sweating and muscle toning was not exactly what some of us had in mind for our twilight years, but there are a lot of fun activities that folks in their 70s can use to burn calories and maintain better health--as long as they don't overdo it and take precautions to avoid injuries, especially back, knee and hip injuries. Here, for instance, are the approximate calories you'll burn in a few activities still available to most of us.The calorie counts come from Fitday and are based on a 73-year-old guy who is 5'8", is about 15 pounds overweight at 180 pounds and is normally involved in sit-down type activity. Basketball, shooting baskets, 30 minutes--114 Bicycling, leisurely, 1 hour--195 Bowling, 2 hours--260 Dancing, ballroom, slow, 2 hours--260 Fishing, sitting in boat, 2 hours--195 Fishing, standing on river bank, 2 hours--325 Frisbee, playing, 30 minutes--65 Gardening, general, 1 hour--260 Golf, 4 hours, using a riding cart -- 650 Golf, 4 hours pulling a golf cart-1040 Golf, 4 hours, carrying a bag--1170 Golf, miniature or driving range, 30 minutes--65 Horseback riding, general, 1 hour--194 Hunting, general, 2 hours--520 Jogging, general,30 minutes--195 Mowing, with power mower, 1 hour--228 Mowing, with riding mower, 1 hour--96 Racquetball, 1 hour 390 Raking lawn, 1 hour--194 Sailing, general, 1 hour--130 Shopping, with grocery cart, 30 minutes--80 Snorkeling, 30 minutes--130 Swimming, crawl, slow, moderate or light effort, 30 minutes--225 Swimming, treading water, moderate effort, 30 minutes--95 Tennis, 1 hour doubles--325 Tennis, 1 hour, singles--455 Walking, slow pace, 2 mph, 1 hour--95 Walking, moderate pace, 3 mph, 1 hour 160 Walking, pushing or pulling stroller with child, 30 minutes --95 Walking the dog, 30 minutes--80 (probably more for Afghans) Walking, running, playing with children, moderate effort, 1 hour--190 No, sexual activity is not a great calorie burner. Fitday says that even 30 minutes of "vigorous activity" will only burn 16 calories. To determine how many calories you can burn in each activity, visit Fitday and enter your age, sex, height, weight and lifestyle.