Can women exercise during pregnancy?

Of course yes!!!

but not vigorous exercises like lifting heavy weights, jumping etc...

Can exert light exercise during pregnancy, for example, walking, especially in the last months of pregnancy 

IT DEPENDS IN YOUR SITUATION. THE SAFEST EXERCISE FOR PREGNANCY IS WALKING. :)

BUT BEFORE DOING ANY EXERCISES,YOU HAVE TO CONSULT TO YOUR PHYSICIAN FIRST.

Yes, they can. It is recommended that they do moderate-intensity physical activity (ex. swimming, yoga, stretching exercises) for30 minutes or more a day. However, it should be noted that they shouldn't exercise to exhaustion and should augment heat dissipation with fluid replacement. Avoidance of exercise in the supine position after the first trimester should be noted as well as activities requiring good balance in the third trimester because the center of gravity of the pregnant woman shifts during that stage.

walking is very important exercise to women's specialy during pregnancy this makes the muscles and ligaments of pelvic more flexible. 

Yes it's preferred for women to exercise specially during the second trimester by walking and doing Pilates exercises for pregnant women  

yes, it is advisable for them to have non- strenuous exercises for healthy and easy delivery.

yes mainly pelvic floor and lower extemity exercise is very important. pelvic floor exercise help to strengthen muscles and for easy delivery and lower limb exercise to prevent water retension

Yes women can exercise during pregnancy, however they have to talk to their physician and make sure that the exercises they do are not harmful to the fetus and or a threat to early delivery.

Exercise is so beneficial during pregnancy , pregnant women should exercise at least30 minutes a day most days of the week. The ideal workout gets your heart pumping, keeps you limber, manages weight gain, and prepares your muscles without causing undue physical stress for you or the baby.

The following activities are usually safe for expectant moms, although some of them may not work for you during the last few months of your pregnancy. Make sure you consult your healthcare provider before embarking on any exercise regimen .

• Walking: One of the best cardiovascular exercises for pregnant women, walking keeps you fit without jarring your knees and ankles. It's also easy to do almost anywhere, doesn't require any equipment beyond a good pair of supportive shoes, and is safe throughout all nine months of pregnancy.
• Swimming: Healthcare providers and fitness experts hail swimming as the best and safest exercise for pregnant women. Swimming is ideal because it exercises both large muscle groups (arms and legs), provides cardiovascular benefits, and allows expectant women to feel weightless despite the extra pounds of pregnancy.
• Low-impact aerobics: Aerobic exercise strengthens your heart and tones your body. And if you take a class for pregnant women, you'll enjoy the camaraderie of other moms-to-be and feel reassured that each movement is safe for you and your baby.
• Dancing: You can get your heart pumping by dancing to your favorite tunes in the comfort of your own living room, with a DVD, or at a dance class, but steer clear of routines that call for leaps, jumps, or twirls.

Regular exercise during pregnancy can decrease some common discomforts such as backaches and fatigue. There is evidence that physical activity may prevent gestational diabetes (diabetes that develops during pregnancy), relieve stress, and build more stamina needed for labor and delivery.

If the pregnant have a medical problem, such as asthma, heart disease, or diabetes, exercise may not be advisable.