Has anybody ever told you you should lean forward when a horse goes uphill and lean backward when a horse goes downhill? Well they are wrong, never lean!
You always want to be balanced in the saddle. In this case 'balance' means you want to stay in a 90 degree angle wit...
Never lean, always balance.
Riding without reins
Move away from pressure
Reins as indicators
One cue at a time
I'm not where I am, I am where I'm going
Forward motion comes first