價格：免費
更新日期：2019-06-25
檔案大小：6.0M
目前版本：3.0.0
版本需求：Android 4.2 以上版本
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Email：https://romantsisyk.wordpress.com/sit-ups/
If done carefully, sit ups can help build your core and abdominal muscles. Best of all, you don’t even need any kind of special equipment to do them. Once you get the basic form down, you can try sit up variations to make your workouts even more effective. Just be sure to use proper form, as sit ups can cause injuries to the neck and lower spine.
