Welcome to the website hope you find it helpfull even if it's your first or 2nd or don't even have a horse, hope this helps.
Grooming your horse is both good bonding and therapeutic for them and using a currycomb on your horses back in a circular motion is good for getting their blood pumping and it is a bit like a massage.
Having a regular routine is good and organised sunny weather is great and all but if your pony/horse doesn't like drinking then a bit of natural apple juice helps as they like the taste. Freezing treats in ice for them to lick helps them to keep hydrated and is also fun and yummy for your equine in the scorching heat.
Heels down helps balance and posture, also when jumping keep low to the horse but hands up and forward. Flat work is good for balance and confidence for you and for your horse.