✓ Perfect duration for high-intensity cardio sessions
✓ Helps maintain consistent form and effort throughout your workout
✓ Ideal for tracking rest periods and interval training
✓ 4 minutes is scientifically proven to boost metabolism and endurance
Click the "Start Timer" button when you're ready to begin your cardio session
Dedicate the next 4 minutes entirely to cardio
When time's up, you'll hear an alert and see a notification
Start another 4 minute session or choose a different duration