Short-bout Handgrip Exercise Intervention

Each participant in the intervention group can freely choose a handgrip of strength from 10 to 25kg which can be gripped with adequate grip strength. The PI will play the short video (5 minutes, www.youtube.com/watch?v=mZex2Wwy3fU) about the 10s-E for the participant, including (1) rapid grip-and-release the handgrip for at least 30 times in 10seconds in each hand, and (2) short-bout hand pushing and pulling exercises without handgrip. During the video, participants are asked to follow the 10s-E demonstrated by the medical professor. After the video, the PI will guide the participant to repeat the 10s-E for 5 times within the next 5 minutes. If participants feel pain in their hands, they can slow down the exercise. Between each exercise set, rest time for 10-20 seconds will be allowed. After practicing all these exercises, participants are asked to complete a post-intervention questionnaire

The control group will watch two videos on healthy diet (https://www.youtube.com/watch?v=w\_u4BYV2Okc). Similar to the 10s-E condition, they will complete a post-intervention questionnaire after the two videos.