Design interval sessions from work, recovery, repetitions, modality and total session-time constraints.
An interval session is a sequence, not just a work-to-rest ratio. This tool previews every work and recovery segment so the session can be checked before training.
This tool is designed around a specific planning problem: turning the user's own training constraints into a transparent structure. It does not pretend that a single number is universally optimal. The result is based on the values entered and is intended to make trade-offs easier to see.
Start with the schedule you can actually maintain. Then compare the generated distribution with your existing week. If the result creates an obvious conflict with work, sport, strength training, recovery or equipment access, change the inputs rather than forcing the output.
Keep units consistent and distinguish planned workload from completed workload. A planning estimate is not a measurement of fitness, recovery or physiological adaptation.
The calculations on this page use transparent arithmetic and scheduling heuristics based on the information you provide. They are not diagnoses, individualized medical prescriptions or guarantees of performance outcomes. Cardio intensity, recovery and training response vary between people and across circumstances.
No. It organizes the inputs you provide and exposes practical trade-offs. It does not prescribe a universal program.
Yes, where the tool includes competing priorities or scheduling inputs. The output should still be checked against your complete weekly workload.
The arithmetic is exact for the values entered, but the interpretation is a planning estimate. Real-world training response is not captured by a calculator.
Yes. Recalculate after changing frequency, duration, intensity distribution or other relevant constraints to compare scenarios.
No. A target is a planning reference. If your actual schedule or recovery changes, adjust the plan rather than treating the number as mandatory.