Lycium barbarum nourishes yin and kidney, jujube nourishes qi and spleen, and hawthorn nourishes the first two flavors. Together, the three flavors can play the role of invigorating spleen and kidney.
As for sugar, it is only a correction, and it is best not to add it. Decide whether to stay or not according to your own taste.
Don't worry about whether it will cause muscle pain. But there must be a limit to everything, even if it is a better health tea, don't overdo it. Tea like the one above should be stopped when you have a cold, because it has the disadvantage of nourishing evil spirits.
I hope I can help you.