Timed challenge timers

Online Challenge Timers

Pick a ready-made challenge, start the timer, and share your result. Built for quick fitness tests, focus sessions, breathing resets, meditation practice, and controlled cold exposure.

6 challenges Fitness, focus, calm, and cold exposure timers in one place.

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All Challenges

Build a Custom Interval

Plank Challenge Hold a plank for 2 minutes. Core tight, hips level, breathe steadily. No dropping to your knees. 2 minutes Start challenge Cold Shower Challenge Stand under fully cold water for 30 seconds. The shock fades after 10 seconds - Just breathe through it. 30 seconds Start challenge Ice Bath Challenge A one-minute cold plunge timer for careful, controlled exposure. Enter slowly, breathe steadily, and stop immediately if you feel unsafe. 1 minute Start challenge 25-Minute Study Sprint Phone face down, notifications off, one task only. 25 minutes of unbroken focus. Start the timer before you open your notes. 25 minutes Start challenge Box Breathing Breathe in for 4 counts, hold for 4, out for 4, hold for 4. Four complete cycles. Breathe through your nose only. 64 seconds Start challenge 5-Minute Meditation Sit upright, close your eyes, and breathe naturally for 5 minutes. When your mind wanders, notice it and return to your breath. That's the practice. 5 minutes Start challenge

How to Use These Challenges

Choose a challenge that fits your current energy and environment. Each page includes a preset timer, a completion panel, and a shareable challenge link after you finish.

For fitness and cold exposure challenges, stop early if form breaks, breathing feels uncontrolled, or the activity no longer feels safe.

Need a Different Format?

Use the Countdown Timer for a simple one-off timer, the Interval Timer for repeating rounds, or the Stopwatch for open-ended personal best attempts.