Consider that a horse feels a fly… even a midge on their skin, so being able to ask and achieve the desired result is a better goal than having to tell for the same result.
Provide your horse the opportunity to respond to a light touch with the leg, seat and/or artificial aid, and DON’T nag [a horse will tune out a nagging aid]. If your horse blocks out your light touch, ask with more – quickly and only once – then return to light queries.
With consistency and good timing you will find your horse requires less effort to get more result! ~ Jutta Heinsohn