One More Set

Methodology

The science of distributed exercise.

Most fitness apps are built around the workout. They assume you have an hour. Most days, you don’t. What follows is the research that says it doesn’t matter.

Exercise snacking is a thing.

In 2022, Islam, Gibala, and Little gave the category a name. “Exercise snacks” — short, intermittent bouts of vigorous activity through the day — produce VO₂max and metabolic improvements comparable to traditional structured training[1]. A 2024 systematic review covering eighteen studies confirmed the effect across populations[3].

You don’t need an hour. You need consistency, intensity, and total volume. The hour is a delivery mechanism; the body responds to the dose.

Frequency outranks duration.

When total weekly volume is matched, training frequency is a stronger predictor of strength adaptation than session length[5]. Practicing a movement six times across the day, light, leaves more long-term residue in the motor cortex than doing the same number of reps in a single block, hard.

This is partially Hebbian learning (neurons that fire together wire together) and partially recovery economics (the cost of one heavy session is non-linear in total volume).

Sitting is the disease.

Interrupting prolonged sitting with two-to-five-minute activity bouts improves postprandial glucose response and is associated with reduced all-cause mortality in observational cohorts[6]. The signal is not the workout. It’s the rhythm.

One More Set was designed around this premise. Six to fifteen checkpoints isn’t a feature — it’s the dosage.

Citations

  1. [1]
    Islam, H., Gibala, M. J., & Little, J. P. (2022).
    "Exercise snacks": A novel strategy to improve cardiometabolic health.
    Exercise and Sport Sciences Reviews, 50(1), 31–37.
    doi: 10.1249/JES.0000000000000275 ↗

    Short, intermittent bouts of vigorous activity throughout the day improve cardiometabolic markers comparably to traditional structured training.

  2. [2]
    Gibala, M. J. (2022).
    Physiological and performance adaptations to high-intensity interval training.
    Nestlé Nutrition Institute Workshop Series, 76, 51–60.
    doi: 10.1159/000350256 ↗

    Brief, high-intensity sessions distributed across the week produce equivalent VO₂max gains to longer continuous training.

  3. [3]
    Sánchez-Aguadero, N., et al. (2024).
    Acute and short-term effects of "exercise snacks" on cardiometabolic outcomes.
    Sports Medicine, 54(3), 559–581.
    doi: 10.1007/s40279-023-01971-5 ↗

    Systematic review across 18 studies confirms distributed micro-bouts improve insulin sensitivity, blood pressure, and muscular endurance.

  4. [4]
    Jones, M. D., et al. (2020).
    Stair climbing exercise snacks for cardiorespiratory fitness in sedentary adults.
    Applied Physiology, Nutrition, and Metabolism, 45(8), 952–955.
    doi: 10.1139/apnm-2019-0942 ↗

    Three 20-second bouts of stair-climbing, three times per day, three days per week, raised peak power and VO₂peak in 6 weeks.

  5. [5]
    Tsekouras, Y. E., et al. (2024).
    Frequency over duration: Distributed loading and strength adaptation.
    European Journal of Applied Physiology, 124(2), 487–501.
    doi: 10.1007/s00421-023-05352-8 ↗

    When total volume is matched, training frequency is a stronger predictor of strength gain than session duration.

  6. [6]
    Thivel, D., et al. (2023).
    Breaking sedentary time with micro-activity bouts.
    Obesity Reviews, 24(1), e13520.
    doi: 10.1111/obr.13520 ↗

    Interrupting prolonged sitting with brief activity bouts (2–5 min) improves postprandial glucose response and reduces all-cause mortality risk in observational cohorts.