Activity Overview

Every week, Paceline tracks specific signals from your connected device and displays them on the Activity tab. Together they show not just that you moved — but how much, how hard, and how consistently.

What is an Elevated Heart Rate minute (eHR)?

Your headline number. Any minute your heart rate is elevated to moderate intensity or above counts — a brisk walk, a bike ride, a dance class. It doesn't matter what you do, only that your heart is working.

How many eHR minutes do I need each week?

150 eHR MIN / WEEK — the number that earns your Streak.

Hit 150 eHR minutes in a week and earn your Streak. That target comes from American Heart Association (AHA) guidelines for weekly moderate-to-vigorous activity.

What is a Heart Rate Zone?

A heart rate zone is a range of beats per minute, expressed as a percentage of your maximum heart rate (the fastest your heart can safely beat). As you move harder, you climb from one zone to the next.

How is my maximum heart rate calculated?

A common starting estimate for max heart rate is 220 minus your age. Your true max is personal, and most devices refine it over time.

Which zone should I be aiming for?

Different zones, different gains. Lower zones build endurance and aid recovery; higher zones build speed and peak fitness. The mix is what matters.

The sweet spot for health. Major health guidelines target moderate-to-vigorous activity — roughly Zone 2 and up. That is where the heart-health benefit lives.

Train smarter, not just harder. Zones keep easy days easy and hard days hard — progress without burning out.

How do I know what zone I'm in without checking my watch?

Use the talk test:

• Zones 1–2: You can hold a conversation. Easy and sustainable — most of your week.
• Zone 3: Short sentences only. Working, but steady.
• Zone 4: A few words at a time. Saved for intervals and tempo efforts.
• Zone 5: No talking. All-out, for seconds at a time.

A simple way in: warm up through Zones 1–2, spend most of your time in Zone 2–3, and add short pushes into Zone 4–5 to build fitness — then ease back down to recover.

What counts as a step?

The simplest signal there is — counted from the motion of your wrist or phone. Steps don't ask how hard you worked; they capture how much you move through your day, which matters on its own.

Good to know: your watch and phone count independently, so their totals rarely match. Paceline uses what your connected device reports.

How are floors counted?

Climbing counts extra. Devices with a barometric altimeter sense changes in air pressure as you gain elevation — one floor is typically about 10 feet (3 meters) of climb. Stairs, hills, and hikes all register.

Good to know: stair machines and treadmill inclines often don't count — no change in altitude, no floors. Outdoor climbs do.

How is distance measured?

How far you traveled under your own power. Outdoors it comes from GPS; indoors your device estimates it from your stride and pace. Distance gives your walks, runs, and rides a size — and a way to see them grow.

Good to know: GPS distance is the most accurate; indoor estimates improve as your device learns your stride.

Why do my numbers differ across devices?

If your device and Paceline show slightly different numbers for the same week, that's expected. Every metric here is calculated, not handed down, and every device makes its own assumptions:

• How they sense movement: Wrist sensors, phone accelerometers, chest straps, altimeters, and GPS all measure differently — and each has blind spots.
• What they assume about you: Max heart rate, stride length, sensitivity thresholds — different assumptions shift every number.
• How they define a unit: Apple, Garmin, Fitbit and Whoop each use their own formula for a "zone minute," a step, or a floor.
• How often they sample: Brief spikes near a boundary can land on either side.

Paceline helps you track these signals so you can see your progress week over week. Consistency beats precision.

Activity metrics are general guidelines for educational purposes only — not medical advice. Talk to a healthcare provider before starting or changing an exercise program.