It is important to take regular breaks when quilting. It can be hard on shoulders, wrists & backs. I set a timer for 45 minutes. When the timer goes off I Stop. Walk away, go get a drink, maybe a snack, check the mail, start a load of wash; what ever. Stay away for at least 15 minutes. Reset alarm & start again. I find my quilting is better & actually goes faster without discomfort later.