To make a video for a health class, pick one behaviour and one body system, then explain the chain from the behaviour to what happens inside the body to what someone can actually do about it. "What skipping sleep does to your brain" works. "Sleep" does not. Get every fact from a reliable public health source such as the CDC, the NHS, the WHO or a school health textbook, and put those sources on screen at the end. Keep the tone factual rather than frightening, because exaggeration is both inaccurate and less persuasive. Three to four minutes of narration, about 450 to 600 words, is the right size for most class projects.

Choose a question, not a topic

Health class topics arrive as big nouns: nutrition, sleep, stress, vaping, exercise, hygiene. A video on a noun turns into a list of facts read over pictures. A video on a question has a shape.

Each of these has a mechanism (something happens, which causes something else) and a practical end (what to do about it). That is the structure health teachers usually mark for: knowledge of how the body works, plus a healthy decision based on it.

Sources that hold up

Health is the subject where the internet is least reliable and where a confident wrong claim does real harm. A quick test for any fact you plan to use: can you find it on a public health or medical organisation's site, or in your textbook? If it only appears on wellness blogs or in a viral video, leave it out.

Good places to check:

• Government health agencies, such as the CDC in the US, the NHS in the UK, or your own country's health ministry.
• The WHO for global statistics.
• Professional bodies, such as the American Academy of Sleep Medicine for sleep or a national heart foundation for cardiovascular health.
• Your class textbook, which is also what your teacher will compare against.

Be careful with numbers. "Teenagers need 8 to 10 hours of sleep a night" is the AASM recommendation for ages 13 to 18. "Teenagers need 10 hours" is a distortion of it. Copy figures exactly and say where each came from.

Worked example: what 36 hours without sleep does to your body

This is a good health class topic because almost every student has pulled a late night, and the effects are well studied. Here is a script outline for about three and a half minutes.

Scene 1. The setup. A clock moving from 7am on day one to 7pm on day two. "You wake up at 7 on Monday and do not sleep again until Tuesday evening. That is 36 hours. Here is what happens."

Scene 2. Sleep pressure. A brain with a slowly filling gauge. "While you are awake, a chemical called adenosine builds up in your brain. The more of it there is, the sleepier you feel. Sleep clears it. Caffeine works by blocking the receptors adenosine attaches to, which hides the tiredness without removing the cause."

Scene 3. Around 17 to 19 hours. A reaction-time test with a slow hand. "By late Monday night, research on volunteers has found reaction times and attention as poor as in people with a blood alcohol concentration of about 0.05 percent."

Scene 4. Around 24 hours. "After a full day awake, one well-known study found performance comparable to a blood alcohol level of about 0.10 percent, which is above the legal driving limit in many countries."

Scene 5. Microsleeps. Eyes closing for a second, a car drifting. "The brain starts to take microsleeps, lapses of a few seconds that you may not notice. This is why drowsy driving is dangerous."

Scene 6. Mood and memory. "Emotional control drops, and memories from the day before are stored less well, because sleep is when the brain consolidates them. Pulling an all-nighter to study works against the studying."

Scene 7. Recovery. "One or two nights of good sleep restore most of your alertness. But you cannot bank sleep in advance, and regular short nights add up."

Scene 8. What to do. "Teenagers are recommended 8 to 10 hours a night. A fixed wake time, no screens in the last hour, and no caffeine after mid-afternoon help most."

Scene 9. Sources. The AASM recommendation, the CDC's sleep pages, and the alcohol-comparison studies (Dawson and Reid, 1997, in Nature; Williamson and Feyer, 2000).

Notice the careful wording in scenes 3 and 4: "research found", "comparable to", "about". The studies measured performance on specific tests in specific groups of adults. Saying "being tired is exactly the same as being drunk" would overstate them, and a sharp teacher will notice.

Sensitive topics need extra care

Some health class topics touch on things your classmates may be living through: eating disorders, self-harm, substance use, sexual health, mental illness, grief. A few rules apply to all of them.

Do not include methods, amounts or how-to detail. A video about eating disorders should not mention calorie numbers or weights. A video about drugs should not explain doses.

Avoid shock images. Drawn illustrations are an advantage here, because they show a mechanism without graphic photographs.

Do not make it about blame. Explain causes and risk factors, not who is at fault.

End with where to get help. Your school counsellor, a trusted adult, and a national helpline for your country. If your topic involves suicide or self-harm, look up your country's safe messaging guidelines first and follow them.

Ask your teacher if unsure. Teachers often have a list of approved topics for exactly this reason.

Make it

1. 1

   Turn the topic into one question

   Behaviour plus body system plus effect. Write it at the top of a page and keep it there.

2. 2

   Collect four to six facts from reliable sources

   Government health agencies, the WHO, professional bodies or your textbook. Write the source next to each fact as you go.

3. 3

   Write the script in your own words

   One paragraph per step of the chain, from behaviour to effect to what to do. About 150 words per minute of video.

4. 4

   Draft the video

   Paste the script into openCanviz and set the target length. Choose Keep my wording if your teacher marks the wording itself. Whiteboard or doodle on paper suit a body-systems explanation.

5. 5

   Check every number and label

   Compare each figure on screen with your source. Drafts can round numbers or label the wrong organ, and you are the one marked on accuracy. Fix any scene in the editor.

6. 6

   Add a sources scene and a help line

   List your sources in the format your class uses. For sensitive topics, end with where to get support.

How it is usually marked

Health class rubrics vary, but most check four things: accurate health information, use of valid sources, a clear link to a healthy behaviour or decision, and clear communication. The last one is where the format helps. A drawn diagram of adenosine filling a gauge is easier to follow than a talking head describing it, and it shows the teacher you understand the mechanism.

If your teacher wants you to present in person, the same scenes work as a backdrop while you speak. For general rules on length, sourcing and AI use, see how to make a video for a school project. If your health topic is really a biology question, how to make a science explainer video for class covers the label checks in more detail.

Common questions

How long should a health class video be? Whatever the brief says. If it gives no length, three to four minutes is enough for one question, about 450 to 600 words of narration.

Can I use statistics from news articles? Follow the article back to the original source, usually a government agency or a published study, and cite that instead. News headlines often round or exaggerate numbers.

Is it all right to include my own experience? A short personal line can make the opening stronger, such as the night you stayed up for an exam. Keep private health details out, especially other people's.

Should the video tell people what to do? Yes, briefly and practically. Most health rubrics expect a link to a healthy choice. Give realistic advice rather than absolute rules, and never present it as personal medical advice.

Can I make a video about a social side of health, like access to care? Yes, and it often makes a stronger project. How to make a video explaining a social issue for school covers that angle.