should ur fist be clenched always or clenched just before impact on a opponent?

[Scrap]

Box with the fist in position but relaxed, its easier to open than close Ive found its a good Habit. I think it saves Hand injurys.

[nyc champ]

Box with the fist in position but relaxed, its easier to open than close Ive found its a good Habit. I think it saves Hand injurys.

THANKS ILL KEEP THAT IN MIND