High-intensity interval training, or HIIT, alternates short periods of hard effort with recovery. It is popular because it is time-efficient and needs no equipment. It is also demanding, which means beginners benefit from a careful start. This guide gives you five HIIT sessions that work in a living room, a hotel room or an office, each with clear intervals, a low-impact version and guidance on how often to do them.
Start with a 1:2 work-to-rest ratio (for example, 20 seconds hard, 40 seconds easy), do HIIT no more than 1 to 2 times a week at first with at least a day between sessions, and count your other activity as the foundation. If you are new to exercise, begin with the low-impact session first.
What "high intensity" means
The CDC describes vigorous intensity as being unable to say more than a few words without pausing for a breath, roughly a 7 or 8 on a 0 to 10 effort scale. In HIIT, your hard intervals reach that level briefly, and the rest intervals bring you back toward a 3 or 4. You do not need to reach maximum effort, and beginners often benefit from staying just below "all out."
Adults can meet the CDC's weekly target with either 150 minutes of moderate activity or 75 minutes of vigorous activity, so short bouts of vigorous work count toward the total. That does not mean vigorous is better for everyone; it is one option.
Talk to a health care provider before starting HIIT if you have heart or lung disease, high blood pressure, diabetes, joint or back problems, are pregnant or postpartum, or have been inactive for a long time. Stop if you feel chest pain, dizziness, nausea or unusual shortness of breath.
Before you start
- Warm up for 3 to 5 minutes: marching, arm circles, bodyweight squats and hip circles.
- Wear supportive shoes and use a non-slip surface.
- Choose the version that fits you. Every session below has a low-impact option.
- Cool down for 3 to 5 minutes with slow walking and gentle stretches.
Five HIIT sessions at a glance
| Session | Total time | Best for | Impact |
|---|---|---|---|
| 1. Low-impact starter | 12 minutes | First-timers, sensitive joints | Low |
| 2. Bodyweight 30/30 circuit | 14 minutes | A classic full-body session | Moderate |
| 3. Band interval circuit | 15 minutes | Adding strength to intervals | Low |
| 4. Four-minute finisher | 4 minutes + warm-up | Adding intensity to a workout | Moderate to high |
| 5. Quiet apartment or office intervals | 10 minutes | Small spaces, no noise | Low |
1. Low-impact starter (12 minutes)
Do 20 seconds of work, 40 seconds of rest for four exercises, then repeat the round three times.
- Fast marching with high arm swings
- Squat to a chair
- Step jacks
- Standing knee-to-elbow
Progress by moving to 30 seconds of work and 30 seconds of rest after two weeks.
2. Bodyweight 30/30 circuit (14 minutes)
Do 30 seconds of work, 30 seconds of rest for six exercises, two rounds.
- Squat (or squat jump)
- Incline push-up on a counter
- Reverse lunge
- Mountain climber (or slow hands-on-counter version)
- Skater steps (or hops)
- Plank hold (on knees or incline)
Low-impact version: use the first option in each parenthesis. If you want variations that combine strength and cardio, our 10-minute home workouts are a gentler way in.
3. Band interval circuit (15 minutes)
A loop band adds resistance without impact. Do 40 seconds of work, 20 seconds of rest for five exercises, three rounds.
- Banded squat
- Band row (tube band anchored)
- Banded glute bridge
- Standing overhead press
- Lateral band walk
See our resistance band guide for setup and safety tips.
4. Four-minute finisher
This is an interval format often called Tabata: 20 seconds hard, 10 seconds rest, 8 rounds of one movement or two alternating movements. It is short and intense, so use it only after a full warm-up, and treat it as an add-on rather than a stand-alone workout for beginners.
- Beginner option: fast marching or step jacks at a hard but controlled pace.
- Intermediate option: alternating squat jumps and mountain climbers.
5. Quiet apartment or office intervals (10 minutes)
No jumping, no equipment. Do 45 seconds of work, 15 seconds of rest, two rounds of five moves:
- Fast step-outs
- Slow-tempo squat
- Wall push-up
- Standing march with opposite elbow to knee
- Calf raise with a hold at the top
This session also works in a hotel room or between meetings, since it needs only a wall and a chair.
How often to do HIIT
| Level | HIIT sessions per week | Other activity |
|---|---|---|
| Beginner | 1 | Walking, easy cardio and 2 strength days |
| Some experience | 1 to 2 | Same, with at least a day between hard sessions |
| Regular exerciser | 2 | Keep at least two easy days |
HIIT should not be your only exercise. Our weekly plan guide shows how to balance hard and easy days.
Signs you are doing too much
Sleep that gets worse, persistent soreness, a resting heart rate that climbs, irritability or a sense of dread before workouts. Reduce to one session a week, shorten the hard intervals and add a walk on off days.
FAQ
Is HIIT safe for beginners?
How long should a HIIT workout be?
Can I do HIIT every day?
How do I know if I'm working hard enough?
Sources and further reading
