More Than a Wake-Up

Used well, caffeine earns its reputation:

• Sharper focus — better reaction time and attention at moderate doses
• Better workouts — a small but real boost to endurance and power
• Long-term health — regular coffee is linked to lower risk of Parkinson's, type 2 diabetes, and liver disease
• Brighter mood — a mild lift that can take the edge off a flat day

The catch: these wins come from moderate, deliberate use. They do not come from pouring on more cups to paper over poor sleep.