How much cardio per week actually depends on which of four people is asking. The answers up front: for health, 150 moderate minutes (or 75 vigorous) is the floor; for fitness, three to five mixed sessions; for fat loss, more helps but the kitchen leads; for lifters, two or three easy sessions coexist with the iron just fine. This page is the weekly ledger — the official standard, what counts at each intensity, the dose for each goal, and the honest ceiling — with the per-session details already handled by the workout-length guide and the pacing by zone 2.
The official floor (memorize this one)
The physical activity guidelines from the Department of Health and Human Services set the standard worth knowing by heart: at least 150 minutes of moderate intensity activity (that's the famous 150 minutes per week), or 75 minutes of vigorous intensity work, or an equivalent moderate to vigorous intensity mix — plus muscle-strengthening work for all major groups at least twice a week, the half of the guideline everyone forgets and this site exists to remind you of. The exchange rate makes mixing easy: one vigorous minute counts roughly as two moderate ones. And for extended health benefits, the guidelines point toward 300 minutes of moderate work — a target walkers hit more sustainably than anyone. The floor is genuinely a floor: most of the health benefits — blood pressure, blood sugar, mood, sleep, heart risk — arrive in the first 150, which is the most encouraging fact in exercise science.
What counts at each intensity
Moderate intensity exercise is brisk walking, easy cycling, a doubles match, the mower — the talk-test zone where you can speak but couldn't sing. Vigorous intensity activity is running, hard intervals, singles, sports with sprinting — words come in short phrases only. The calibration is personal: one person's jog is another's all-out effort, and the breath, not the activity's name, decides which column your minutes of moderate intensity or vigorous work land in. Every form of cardio activity counts — machines, sidewalks, pools, dance floors; the ledger is gloriously indifferent to style.
The week, by goal
1. General health: the floor, made livable. Five brisk 30-minute walks — done, guideline met, most of the longevity benefits banked. The classic "30 minutes most days" translation exists because it survives real life, and short pieces stack: three brisk tens equal one thirty, all week long.
2. Building fitness: three to five sessions, mixed 80/20. Mostly easy zone 2 work with one genuinely hard session — the interval day — is the distribution endurance coaches have run for decades. Progress by adding minutes before adding intensity; the aerobic base is built in easy hours, and the ceiling is raised in hard minutes, in that order.
3. To lose weight: cardio supports, the deficit decides. Every cardio minute widens the calorie deficit and — just as valuably — defends it against the appetite math of dieting. The realistic weight loss dose for meaningful support: 200–300 weekly minutes of mostly moderate work, heavy on walking, alongside the kitchen doing the leading. Cardio exercise is the ally here, never the engine — the engine has its own page.
4. Lifters: the mixing question, answered honestly. Two or three easy sessions of 20–40 minutes barely touch the recovery budget — the interference effect between cardio and lifting is real mainly at high volumes and high intensities, not at the moderate doses that make you healthier and recover faster between sets. Place cardio after lifting or on separate days, keep the hard intervals to one slot a week, and the iron never notices. A week of moderate intensity aerobic work is a gift to your training, not a tax on it.
Can you do too much? (yes — here's the line)
The recovery budget is real, and cardio spends from the same account as everything else. Past roughly 300–400 weekly minutes, non-athletes buy shrinking returns and growing fatigue — and the warning lights are the usual dashboard: performance dropping, sleep fraying, mood flattening, resting heart rate creeping (the full panel is here). The rest day stays sacred at every dose. More is better up to a point; past it, more is just more.
The busy-week playbook
When the calendar collapses, the guidelines still bend toward you. The vigorous route compresses beautifully: three 25-minute hard sessions hit 75 minutes of vigorous intensity work and the box is checked. The weekend-warrior pattern — cramming the minutes into two days — delivers most of the same health benefits according to the research, a genuinely comforting finding for real schedules. And the ten-minute rule always applies: intensity physical activity in short pieces stacks all week, and something beats nothing by more than the all-or-nothing brain admits.
Three sample weeks
The health week: five 30-minute brisk walks — Monday through Friday, podcast optional, guideline complete. The fitness week: two 40-minute zone 2 sessions, one 20-minute high intensity interval workout, one long weekend walk — about 160 mixed minutes, 80/20 honored. The lifter's week: three strength sessions, two easy 25-minute zone 2 spins on off days, one optional Friday interval finisher — the iron leads, the engine hums, nobody fights. Pick the week that matches the goal, and let it evolve as the goal does.
Quick answers
Can I do cardio every day? Easy cardio, yes — it's one of the few daily-safe habits in training; hard cardio needs the same spacing as hard lifting. Cardio before or after weights? After, or on separate days — whatever's the priority goes first while you're fresh. Does lifting count toward the cardio minutes? The guidelines count it as the muscle-strengthening half — a fast circuit blurs the line, but the cleanest ledger checks both boxes separately. What's the best cardio? The one still happening in February — walking's whole case makes it the default answer for most humans, and enjoyment remains the most underrated training variable in the entire field.
The week is the unit that matters: 150 moderate minutes as the floor, a mix that matches your goal, and a ceiling your recovery gets to set. Count the week, not the workout.
Meet the floor first, shape the week to the goal second, and let the walks carry the volume while the hard minutes stay rare and honest. The guideline fits inside any life — which was always the point of having one.