In addition to / Moreover
This structure adds information, indicating that something exists in addition to what has already been mentioned.
Examples
彼は親切な上に、非常に賢いです。
He is not only kind, but also very smart.
この本は面白い上に、ためになる。
This book is interesting and also informative.
運動は健康に良い上に、ストレス解消にもなります。
Exercising is good for health and also relieves stress.
Quick check
運動は健康に良い___、ストレス解消にもなります。