7. Swimming
![Aerobics
Exercises](https://www.starswimschools.com.au/images/Womans-swimming1.jpg)
Swimming is a terrific low-impact activity, especially if you have problems with your joints when walking or running. Begin with single-stroke laps (the freestyle is great for newbies). Add more as you feel ready, such as the breaststroke, backstroke, or butterfly (for more advanced swimmers). Rest as needed in between laps, and never swim alone or without a lifeguard. Do it twice a week for 10–30 minutes. Each week, try to add 5 minutes to your workout.
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8. Stationary bike
Make sure the bike is adjusted to the correct height – in the gym, you can ask your cycling instructor for assistance. You could injure your knees if you don’t! Warm up by pedaling at a comfortable pace for 5–10 minutes, then gradually raise your speed until it seems difficult. To begin, ride steadily at that speed for 20–30 minutes, getting out of the seat as needed. To cool down, ride slowly for 5 minutes. Do it three times a week for 30–60 minutes each time.
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