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Cardio plan: how to prescribe with sessions, phases and intensity

Fitney Team September 25, 2026 2 min read
Cardio plan: how to prescribe with sessions, phases and intensity

“30 minutes on the treadmill, 3 times a week.” That prescription shows up in almost every workout plan, and almost always in a notes field the client never opens. No weekday, no intensity, and nobody knows whether it got done.

The Cardio Plan treats aerobic work as a real prescription, alongside training and diet.

1. Choose the modalities

There are 14 modalities: walking, running, cycling, swimming, elliptical, rowing, stair climbing, jump rope, HIIT, aerobics, dance, treadmill, stationary bike and other. A plan can combine several, such as treadmill on day A and bike on day B.

2. Organize into sessions by weekday

Each plan has sessions (A, B, C…), and each session falls on set weekdays. The weekly layout shows, Monday to Sunday, which session the client does each day, making it easy to fit cardio into lighter training days.

3. Free text or full phase-based prescription

For simple guidance, use free text. When you need control, build the session by phases:

  • Warm-up: 5 min, low intensity
  • Main block: 20 min, moderate intensity, target HR of 130 to 145 bpm
  • Cool-down: 5 min, low intensity

Each phase has a duration and intensity (low, moderate, high or very high) and, if you want, a target heart rate and target speed.

4. Real-time plan analysis

As you build, the panel shows:

  • minutes per week and days per week of cardio;
  • estimated calories per session and per week;
  • intensity distribution, meaning how much of the volume is low, moderate or high.

Calories use the MET method with the client’s current weight, not an old weight buried in their history. That helps align cardio with the diet’s calorie target.

5. Templates so you never start from scratch

Save plans as templates (for example, “Beginner fat loss: 3× LISS”) and apply them to other clients, adjusting as needed.

Cardio vs. running

If your client is a runner, the running module is still the right place, with pace, zones, races and GPS. The Cardio Plan is for the aerobic routine in any modality, which didn’t have a home of its own before.

Conclusion

With the day, intensity and target defined, aerobic prescription leaves the notes field and gets the same care as strength training.

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Frequently asked questions

What's the difference between a cardio plan and a running program? +

A running program is specific to running, with pace, zones and races. A cardio plan covers any aerobic modality (treadmill, bike, elliptical, swimming, rowing, HIIT and more) and organizes the weekly aerobic routine alongside training and diet.

How are cardio calories estimated? +

With the MET method: each modality and intensity has a reference energy-expenditure value, multiplied by the client's current weight and the duration of each phase.

Do I have to prescribe phase by phase? +

No. You can use free text for simple prescriptions, or the full phase-based prescription when you want to control the intensity, heart rate and speed of each stage.

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