Runner's World

Rothstein Quoted in Running Story

Exercise physiologist discusses how runners can reap the benefits of high-intensity interval training (HIIT) and low-intensity steady-state (LISS) workouts.

Rothstein Featured in Speed Workout Story

Expert advises how runners can minimize their risk of sustaining injuries during speed training.

Rothstein Discusses Exercise and Cortisol

Fitness expert comments on the impact of exercise on cortisol levels.