This describes how the lifestyle of a senior investment banker changed dramatically over the course of a long career. Early on, working in a sales role involved late nights, heavy drinking, poor sleep, and unhealthy eating. Despite being physically active, the combination of short sleep and fast food took a visible toll, something that was already noticeable in the banker’s twenties.

Decades later, the same individual follows a very different routine. Fitness is now central to daily life and closely tied to professional performance. Structured exercise, careful eating, and strict time management have replaced late client dinners and alcohol-heavy evenings. Workdays are tightly scheduled, workouts are treated as non-negotiable appointments, and most meetings and conversations now revolve around health and performance rather than food or socializing.

The banker argues that being physically fit directly improves focus, energy, and effectiveness at work. Skipping exercise, in their view, leads to worse performance, not better productivity. They are critical of younger colleagues who remain at their desks during the day without using the time efficiently, suggesting that regular movement and exercise would benefit both health and output.

Although the role still involves weekend planning and long-term commitment, the emphasis has shifted toward sustainability. The broader message is that neglecting health early in a demanding career can lead to serious physical and lifestyle limitations later, while prioritizing fitness can support both longevity and continued professional success.