Half Jacks - What it Works
Focus: Lowerbody
Type: Cardio
Difficulty: level 3 of 5

双脚并拢站立,双臂自然垂于身体两侧。双脚向外跳开,再跳回并拢,保持连续节奏——这是开合跳(jumping jack)的腿部动作,双臂保持低位放松,不要向上摆动。落地时用前脚掌轻柔着地,膝盖微屈以缓冲每一次落地,全程保持躯干挺拔。 双脚并拢站立,双臂自然垂于身体两侧。双脚向外跳开,再跳回并拢,保持连续节奏——这是开合跳(jumping jack)的腿部动作,双臂保持低位放松,不要向上摆动。落地时用前脚掌轻柔着地,膝盖微屈以缓冲每一次落地,全程保持躯干挺拔。

锻炼:股四头肌(quads)、臀肌(glutes)、小腿(calves)、髋外展肌(hip abductors)

呼吸(breathing):保持稳定而有节奏的跳跃,与动作同步——找到一个你能坚持的节奏。

常见错误:全脚掌着地、膝盖伸直地硬着地,腰部前倾,随着疲劳加剧,跳跃幅度变得越来越窄。

降低难度:减少冲击——将一只脚向侧方迈出再收回,以相同节奏交替两侧。

增加难度:加快速度、跳得更宽,或者重新加上手臂动作,做完整版。开合跳(Jumping Jacks) or 海豹跳(Seal Jacks).

Awesome effort you put into making quality workouts/plans/programs and that you still continually update and add new ones. Grateful for your promise in keeping this site accessible and free for… Awesome effort you put into making quality workouts/plans/programs and that you still continually update and add new ones. Grateful for your promise in keeping this site accessible and free for people of all fitness levels & goals around the world. Found Darebee some time years ago and used to just save the workouts and then forget about them somewhere in my documents & to do later lists 😅 but coming back to the site this year I loved the organised/simple layout & navigation of the site with full workout video at bottom to see proper form and notes to make things easier or harder depending on your fitness/energy aswell as an extensive exercise library with joint friendly alternatives. I found it much easier to track/check off completed workouts & days on program/plan on dashboard, was more likely to remember & do it + advanced filter made it quick to find a doable workout. As a tiny way to support this site I made account and use the site exclusively for exercises now, will look to donate when I can 🙏🏽 and would recommend it to all I talk to regarding fitness. Thank you Darebee team for the great job you've all done here and keep up the good work. Blessings to you all.

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