Beginner HIIT Workout Plan (3 Day)
Short intervals on low-impact machines with controlled rest, three sessions a week. HIIT that builds cardio endurance without wrecking your joints.
Routines
Day 1 — Low-Impact Intervals
Cycle through machine intervals; keep effort moderate. Finish with core stability.
Day 2 — Treadmill & Row Intervals
Slightly longer sets; maintain posture and smooth cadence.
Day 3 — Mixed Machine Intervals
Progress intervals slightly; breathe through the nose when possible.
About this plan
Interval training on machines, three times a week. The bike, elliptical, treadmill, rower and stepper do the work, which is what makes this a sensible first HIIT plan rather than a way to hurt your knees in week one.
Day one alternates a stationary bike, elliptical, incline treadmill walk, rower and stepper, closing with a Pallof press and a seated crunch. Day two picks up the pace — treadmill walking, a bike run, cross trainer, elliptical skiing, recline bike — then adds a goblet squat and a cable twist. Day three returns to day one's machines with the order changed.
The machines are the point. High-intensity intervals ask you to work hard while tired, and that is exactly when jumping and landing goes wrong. On a bike or a rower the worst case is that you slow down. You get the cardiovascular stimulus without the impact bill, which matters if you are carrying extra weight or coming back from time off.
Work the intervals by effort, not by a number on the display. Hard should mean you can say two or three words, not a sentence. Recovery should bring your breathing back before the next interval starts — if it does not, extend it. Machines vary too much between gyms for prescribed speeds to mean anything.
The core work at the end of each session is not filler. Intervals train the heart and lungs; the Pallof press and cable twist train the trunk to hold position, and a session that only ever raises your heart rate leaves that untouched.
Progress by adding one interval before making any of them harder. When the session finishes and you could clearly have done more, add a round. Only when the round count is where you want it should you push the pace inside each one.
Three sessions a week, with a day between them. Intervals are more taxing than they feel at the time, and the fatigue tends to show up on the second consecutive day rather than the first.
Train this plan in the app
LoadMuscle carries all 3 routines with a demo for every exercise, and logs your sets as you go, so next session you can see what to beat. Free on iPhone and Android.
Want something built around your own schedule and equipment instead? Try the free workout planner.
