Streak · 7 days+185 XP
7-Day Body System Streak
Learn about one human body system each day, like the circulatory or nervous system. Check in with one fact.
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Health · Facts & stats · iChallenge network
The Medical Challenge
Daily facts and stats about medicine and the human body, plus real challenges to put them to work.
Today's 3 challenges
Wilhelm Röntgen discovered which kind of radiation in 1895?
You went
Level1Rookie
XPPlay a round to earn XP
Streak0days
LeagueBronzeweekly
Daily #28Resets at midnight UTC
Today's round
- 5 questions
- 20s each
- 0 played today
One ranked attempt per day. Practice as much as you like.
Challenges
Join one, log your days or post your proof. Finishing earns XP and the Finisher badge.
Proof+250 XP
Check Your First Aid Kit
Look through a home first aid kit, list what is in it and what is missing, and post a short write-up.
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Proof+250 XP
Medical History Report
Read about one landmark medical discovery, like X-rays or vaccines, and post a short write-up of how it happened.
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Streak · 10 days+200 XP
10-Day Water Bottle Streak
Carry a refillable water bottle every day for ten days. Check in once a day.
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By the numbers
Live counts from MedicalChallenges.com. All arena stats →
Facts in the pack12
Players1
Rounds played1
Visitors, 30 days61
Challenge joins16
Leaderboard
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Badges
Earned on any arena, shown on your profile everywhere.
First RoundFinish your first daily round.
FlawlessAnswer every question in a round correctly.
LightningA perfect round in under 25 seconds.
On a RollPlay 3 days in a row.
Week WarriorPlay 7 days in a row.
UnbreakablePlay 30 days in a row.
ExplorerPlay daily rounds in 5 different arenas.
GlobetrotterPlay daily rounds in 25 different arenas.
PolymathPlay daily rounds in 5 different topics.
In the ArenaJoin your first challenge.
FinisherComplete a challenge.
RecruiterInvite a friend who finishes a round.
CaptainInvite 5 friends who finish a round.
PodiumFinish a day in an arena's top 3.
ChallengerReach level 10.
Profile SavedSave your progress with an email.
Save your progress
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.
Put a prize on a challenge
Fund a prize on MedicalChallenges.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.
- Pick the challenge and the prize
- We review entries before a funded prize is awarded
- You get finisher and engagement numbers after it closes
Current sponsors
Questions
Are these medically reviewed?
Challenges are habit-based community games, not medical advice. Always consult a professional for health decisions.
What does it cost?
Free to play. Scores and streaks are tracked on the leaderboard.
How does the daily round work?
Everyone on this arena gets the same five questions each day, from easy to hard. You get one ranked attempt; practice rounds are unlimited.
How is my score calculated?
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.
Is it free?
Yes. Playing, streaks, badges and leaderboards are free. Some challenges carry a sponsor-funded prize; the challenge card shows it when one is funded.