See your doctor to rule out any possible reasons to not exercise. If your doctor approves, get plenty of daily moderate exercise. It is recommended that pregnant women get at least 30 minutes of moderate exercise every day. There are no heart rate limitations on the exercise you can do. Make sure you can still talk normally while working out. If you are breathing too heavily to talk, you are probably working too hard.  During your third trimester, it is safe to exercise as long as you are not at risk of delivering a preterm baby. If you usually do moderate or high-impact exercise, discuss if you can continue as usual with your doctor or midwife. Try prenatal yoga, brisk walking, along with abdominal and back exercises. Since you can't do crunches on your back, do standing pelvic tilts. This late in pregnancy, you should avoid lifting heavy weights. And as always, stop if you feel dizzy or lightheaded. If you are tired, try short bursts of exercise instead of one long exercise.  Exercise helps keep your heart, lungs, and muscles healthy, and ensures you get plenty of oxygen to your brain and other organs. If you will be exercising at an altitude, be aware that acute mountain sickness (AMT) is a risk. Give yourself time to get used to the altitude if you travel to a location that is above 2500 meters. Wait two or three days before doing any moderate exercise. Resistance exercises are safe, but use light weights and complete a large number of repetitions (e.g. 15-20 repetitions). Make time each day to go for a walk. Go for a walk during your lunch break, take the dog for a walk, or set aside time to walk with a walking partner after you get home from work. Walking is important because it increases blood flow, which boosts energy.  When walking, keep it slow. You don't want to raise your heart rate so you huff and puff. Only engage in a light walk. Try for at least a 30 minute walk every day. Strength training while pregnant can be a great way to get safe exercise. However, you will want to use lighter weights....

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Write a summary of the previous text in Indonesian:
Olahraga. Jalan kaki. Angkat beban. Cobalah berenang. Cobalah mesin kardio di pusat kebugaran. Lakukan yoga. Cobalah menari. Lawan rasa kantuk di siang hari dengan bergerak.