First, read the English article below.

Running is a great cardio exercise if you don’t have access to cycling or rowing machines but still want a good work out. Try running 20 to 30 minutes at a time 3 times a week. It doesn’t matter how fast you run, as long as you’re moving faster than you can walk. Running is a high-impact cardio workout, so if you have problems with your feet or knees, you might want to try something else. Cycling gives you the same type of workout as running, but with less impact on your legs. You can cycle on a stationary bike machine, or go for a bike ride outside. Cycle 3 times a week for 30 to 45 minutes per ride. If you find that the ride seems too easy, increase the resistance on your bike or cycling machine. Swimming works the muscles throughout your whole body and also burns a lot of fat. You can use the basic freestyle stroke, or you can mix in the other strokes – butterfly, breast, and backstroke – for variety. How much you can swim at a time will depend on your overall health, but start by swimming 20 to 30 minutes 3 days a week. Walking is a great cardio exercise if you’ve been injured or don’t have the endurance for a longer workout yet. Go for a 20- to 45-minute walk 2 to 3 times per week. You can walk outside, on a treadmill, or on a track in a gym. You should do cardio 2 to 3 times a week for 20 to 30 minutes per day. You can do the same cardio each time, or you can switch it up each day. For example, if you do cardio on Mondays and Wednesdays, you can go for walks both of those days, or you could go for a walk 1 day and a swim the next. 

Now, please write a short abstract for it in Vietnamese. Abstract:
Hãy chạy bộ nếu bạn không thể đến phòng tập. Đạp xe là bài tập ít va chạm hơn. Đi bơi để tập toàn bộ cơ thể. Đi bộ là bài tập ít va chạm. Chọn 1-2 bài tập cardio yêu thích mỗi tuần.