7-Day Daily Walk
Take a walk of at least 15 minutes every day for a week. Check in once a day.
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Fitness · Facts & stats · iChallenge network
Daily facts and stats about the human body and physical fitness, plus real challenges to put them to work.
What does 'aerobic' exercise mean?
Aerobic means 'with oxygen'; steady activities like walking and swimming are mainly aerobic.

One ranked attempt per day. Practice as much as you like.
Join one, log your days or post your proof. Finishing earns XP and the Finisher badge.
Take a walk of at least 15 minutes every day for a week. Check in once a day.
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Draw a simple skeleton and label ten bones, including the femur and the skull. Post a photo.
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Write a gentle 10-minute routine of simple moves like marching, stretching and wall push-ups, and share it.
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Live counts from PhysicalChallenge.com. All arena stats →
Earned on any arena, shown on your profile everywhere.
Add your email to keep your level, streak and badges if you switch devices, and carry them to every iChallenge arena. One email when you save; no spam.
Fund a prize on PhysicalChallenge.com and your brand sits on the challenge card, the leaderboard and every finisher's share. Prizes only appear once they're funded, so players can trust what they see.
They ramp — early rounds are approachable, streaks unlock harder sets.
Yes, via the contact form; credited if used.
Everyone on this arena gets the same five questions each day, from easy to hard. You get one ranked attempt; practice rounds are unlimited.
100 points per correct answer, up to 50 more for answering quickly, a combo multiplier for answers in a row, and 150 bonus points for a perfect round.
Yes. Playing, streaks, badges and leaderboards are free. Some challenges carry a sponsor-funded prize; the challenge card shows it when one is funded.