The plank can help you strengthen your abdominal muscles.

平板支撑可以帮助你增强腹部肌肉。

Sit-ups are a great way to work on your abdominal muscles.

仰卧起坐是锻炼腹肌的好方法。

How best to train the abdominal muscles fast?

怎样最快速练腹肌？

Bend your legs to relax your abdominal muscles.

弯一下腿,以放松腹部肌肉.

Challenge deep abdominal muscles to support the core.

挑战深腹部肌肉，以支持核心。

Doing sit-ups is an effective way to exercise abdominal muscles.

仰卧起坐是锻炼腹部肌肉的有效办法。

Tighten abdominal muscles to keep lower back flat against floor.

收紧腹部肌群，保持下背部紧贴地面。

Yeah, singers breathe with their abdominal muscles and their chests.

是啊，歌手用腹肌和胸膛来呼吸。

The strain of his abdominal muscles and dorsal muscles was induced by exercising improperly.

他的腹背肌劳损是由于运动不当造成的.

Doing sit - ups is an effective way to exercise abdominal muscles.

仰卧起坐是锻炼腹部肌肉的有效办法.