What is what age is over the hill?

The age considered "over the hill" is a subjective concept, but it's most commonly associated with turning 50 years old. It's often used humorously to suggest someone is past their prime, experiencing a decline in physical or mental abilities, or reaching a significant milestone in their life.

However, it's largely a lighthearted expression, and the actual experience of aging varies greatly from person to person. Many people remain active, healthy, and productive well beyond 50. The phrase reflects societal attitudes towards aging rather than an objective measurement of decline. Some might consider it to be around 40, while others may not consider someone "over the hill" until much later in life, like 60 or 70.