Improve your memory and brain function (all age groups).
Protect against many chronic diseases.
Aid in weight management.
Lower blood pressure and improve heart health.
Improve your quality of sleep.
Reduce feelings of anxiety and depression.
Combat cancer-related fatigue.
Improve joint pain and stiffness.
Anxiety I would say, based on the answers you provided below.
Cardiovascular so you can pump oxygenated blood through the heart
Answer:
"Your core stabilizes your body, allowing you to move in any direction as well as having proper balance. It helps prevents falls and supports your body. So having a strong core is beneficial to everyone because it allows your body to function properly. Improved Balance and Stability." - https://www.healthsourcechiro.com/
