In the second trimester, you need to monitor your body’s reaction to exercise, and accordingly increase the duration or intensity of your workouts. Ensure that you discontinue any activity that can throw you off-balance, like gymnastics, tennis, skating, and hiking. Replace with swimming, water aerobics, or a stationary bike, which don’t require excellent balance.
During this trimester, avoid playing ball sports (soccer, basketball etc) and contact sports. If you’re doing yoga, now’s the time to stop doing backbends, any moves that have you lying on your stomach or back, jumps, and inverted poses. Be careful during this trimester, not to overstretch or make sudden moves.