D&D 5E 12th Level monk with a speed of 50' had to use half her movement to stand up from prone!

[Warmaster Horus]

Athlete Feat as others have said. IMHO, there's no other compelling reason that a monk should get different recover-from-prone rules than another class or creature. They already have Ki compliments that allow for enhanced movement they can use.

 

[Harzel]

OK, now for some Rules "Cheese".

How about the Monk cannot "fall" prone, ever unless they do not have a reaction.

Per rules:

Fallings:
... At the end of a fall, a creature takes 1d6 bludgeoning damage for every 10 feet it fell, to a maximum of 20d6.
The creature lands prone, unless it avoids taking damage from the fall.

Slowfall:
... use your reaction when you fall to reduce any falling damage you take by an amount equal to five times your monk level.

So, being knocked Prone in a attack/action the Monk will fall 0ft Prone, therefore 0 damage, note prone?

Again, Cheese but maybe?

Um, well, except that generally nobody (monk or not) takes damage from being knocked prone. That is, Slowfall is not needed for your argument to apply. So by your reasoning no one could ever be knocked prone.

 

[posineg]

funny thing about that.

On a side note, the monk would be prone if knocked prone opposed to falling prone.

 

[Motorskills]

Athlete Feat as others have said. IMHO, there's no other compelling reason that a monk should get different recover-from-prone rules than another class or creature. They already have Ki compliments that allow for enhanced movement they can use.

I would argue "because Hollywood", but I do understand your reservations. Besides, a monk with decent added movement still gets to go a long way even at half speed.