Hypoglycemia Mid-Class
You teach a 45-minute indoor cycling class. Twenty minutes in, a regular participant, Dev, 45, who has type 1 diabetes, is pale and sweating, his cadence has dropped from 90 to 55 rpm, and when you ask he answers slowly and says he feels "shaky and weird." Before class he told you his glucose was 92 mg/dL; he also mentioned he took his insulin and skipped lunch. You have a glucose meter and 15 g glucose tabs in the studio office, a phone, and 12 other riders mid-interval. Dev does not have a glucagon kit with him.
1. List, in order, what you do in the next 15 minutes and why.
Read the worked answer
1. Stop the exercise and get him off the bike. Continuing exercise worsens hypoglycemia. Sit him down nearby, not in the middle of the floor, and stay with him.
2. Recognize the picture. Pale, sweaty, shaky, confused, recent insulin, missed meal, glucose 92 before class and now 20 minutes of hard work: this is suspected hypoglycemia until proven otherwise. I do not wait for a meter reading to act if he can swallow.
3. Check glucose if it takes under a minute; otherwise treat first. If the meter reads <70 mg/dL (or he cannot be tested), give 15 g fast-acting carbohydrate - glucose tabs are ideal. Do not give a candy bar or a high-fat food.
4. Recheck in 15 minutes. If still <70 mg/dL, repeat 15 g. If he improves, give a longer-acting snack (e.g., crackers with peanut butter) once he is stable.
5. Escalate: if he cannot swallow, becomes unconscious, or has a seizure, call emergency services immediately; do not give oral food. He has no glucagon, so EMS is the only option in that case.
6. Do not send him home alone. Call his emergency contact. Document the incident: time, symptoms, glucose values, treatment, response, and who was notified.
2. How do you handle the rest of the class while this is happening?
Read the worked answer
First priority is Dev, but the other 12 riders still need a safe class. I would:
- Bring the class to a controlled stop or easy spinning at low resistance, and tell them clearly: "Stay seated and keep pedaling easy; I'm helping Dev and will be right back."
- Ask a specific person, not the group, to do a specific job: "Ana, please bring the glucose tabs from the office shelf." Specific requests get action.
- If a co-instructor or front-desk staff member is available, hand off the class or ask them to call EMS/emergency contact.
- Protect privacy: do not announce his glucose or diagnosis to the room. Position myself so the conversation is not broadcast.
- End or shorten the interval portion if I cannot safely supervise both. A 45-minute class is not worth a collapse.
Afterward: check in with the class briefly, thank them for their patience, and debrief with the gym manager. Do not discuss Dev's medical details with other participants.
3. What pre-class system would you put in place for Dev before the next ride?
Read the worked answer
Have a conversation, not a lecture. Ask what his diabetes care team has advised for exercise and ask him to bring that guidance.
Practical pre-class rules:
- Check glucose within 30 minutes of class. If it is below about 100 mg/dL, he should eat 15–30 g of carbohydrate before starting, per his care plan. A pre-class value of 92 with insulin on board and no lunch is a red flag.
- Bring a meter, fast carbohydrate, and a glucagon kit to every session; I will keep a backup glucose source but not his prescription glucagon.
- Do not arrive having skipped a meal after taking insulin. If he has, we modify the session or he eats first.
- Check again at the midpoint of class for the first several sessions, and any time he feels symptomatic.
- Agree on a signal he can give me if he needs to stop without announcing it to the class.
Document: the plan, the agreed signal, and that he was advised to confirm it with his diabetes care team. I do not set his insulin or carbohydrate doses.