Most people believe their metabolism is “broken” and impossible to fix. In reality, it’s just under-stimulated. Your body adapts to what you consistently ask it to do. When workouts are too repetitive, too low intensity, or lack progressive strength training, your metabolism simply settles into maintenance mode.

Metabolic conditioning (MetCon training) unleashes your metabolism by improving its ability to produce and use energy efficiently. It increases muscle mass, improves metabolic function and elevates calorie burn after your workout is over.. MetCon training is higher intensity workouts that combine both strength training and cardiovascular work. This can be programmed many ways, such as steady state cardio before strength training, HIIT training, AMRAPS, interval training and circuit training.

Many people look at the same number post-workout – calories burned. Effective training is not just about what happens during the workout or the calories we burned. It is about what your body is required to do after the workout in order to recover, adapt, and perform better the next time.

That is where using metabolic conditioning, or MetCon training, comes in as an effective way to train so we can reach our goals. MetCon training strategically combines resistance exercises with cardiovascular demand to challenge multiple energy systems within the same training session. Instead of simply lifting weights with long rest periods or performing steady-state cardio at one pace, MetCon requires the body to repeatedly generate force, recover under fatigue, and continue producing output. This repeated demand has been shown to improve metabolic health outcomes, cardiovascular performance, and muscular endurance when compared with lower-intensity or isolated training styles alone.1, 2

TLDR: Your body learns how to work harder and recover faster due to the repeated demand, which begins to create measurable metabolic change.

MetCon Training Creates a Higher Total Energy Demand Boosting Your Metabolism 

Traditional cardio certainly burns calories while you are doing it, but our body easily adapts to steady state cardio, making it less effective for caloric burn and long term change. Metabolic conditioning creates a larger overall physiological challenge because both muscular and cardiovascular systems are being stressed together.

During MetCon Training:

  • more muscle groups are recruited at once,
  • oxygen demand rises rapidly,
  • heart rate repeatedly climbs and recovers,
  • the body must continuously produce usable energy under fatigue.

This repeated switching between effort and recovery improves your work capacity, ability to sustain output and recover from effort over time. Interval-based resistance training protocols continue to demonstrate favorable improvements in cardiometabolic markers, muscular endurance, and total exercise efficiency because of this dual-system demand.1, 3

 

The After Burn Effect: Your Body Keeps Working After the Workout Ends

One major advantage of MetCon training is its ability to create a phenomenon known as excess post-exercise oxygen consumption (EPOC) – or what I call the After Burn.

After higher-intensity exercise, your body must continue using oxygen and energy in order to restore ATP stores (energy our muscles use during contraction), regulate body temperature, clear, clear metabolic byproducts and begin tissue repair. This means calorie expenditure does not simply stop when the workout ends, it continues for up to 72 hours depending on the intensity of the workout.4,5 This is why efficient, strategically intense workouts in a fitness program is extremely power – it creates a ripple effect that increase caloric burn days after the workout and is compounded with caloric burn of the next workout and active recovery day. Our metabolism goes from dormant to ablaze. The metabolism is just getting started from calorie burn – what happens as we continue to change is life altering.

 

MetCon Improves More Than Calorie Burn, It Improves Metabolic Function

The word “metabolism” is often used as if it simply means how quickly you burn calories. True metabolic health is influenced by much more than that. Looking at the bigger picture of metabolic health means lean muscle mass, insulin sensitivity, mitochondrial efficiency, cardiovascular conditioning and how effectively the body can switch between fuel sources. 

MetCon training positively impacts many of these systems at once. Repeated resistance-based intervals stimulate muscular adaptation while also improving oxygen utilization, glucose handling, and energy recovery pathways, all of which contribute to improved metabolic efficiency over time.1, 2, 3

The Ignition Switch (fitness program launching May 11) is built around creating adaptation in order to ignite your metabolism. MetCon sessions teach the body how to perform muscular work while under cardiovascular fatigue. Literature strongly supports that combined resistance and interval conditioning protocols produce broader physiological adaptations than either modality performed in isolation.¹,² It is well documented that resistance exercise-induced metabolic stress encourages a release of varying myokines and cytokines, which is associated with health benefits including lowering of blood pressure, improved insulin sensitivity, and improve cognitive function. Other benefits, such as strength and muscular endurance, is seen with the light-to-moderate resistance, so the expression “No pain, No Gain” is scientifically proven to be obsolete.2  

The Ignition Switch

How You You Will Feel During The Beginning of The Ignition Switch

In the early weeks of this program, it is normal to notice:

  • elevated breathing early in the workout due to increased demand
  • increased muscular fatigue during and post-workouts
  • longer recovery between rounds
  • increased hunger between workouts
  • increased thirst
  • Week 3-4 – the work gets easier 
  • Week 5-6 – it clicks and feels like a reward

These are all signs of metabolic fire starting to burn. When your body is being exposed to a new level of demand, adaptation begins because your body has to answer the call when it keeps coming. Early interval-conditioning studies consistently show that cardiovascular and muscular adaptation begin within the first several weeks of repeated exposure, even before external physical changes are visible.4 This is the point where many people mistakenly assume they are simply “out of shape”, but in reality, they are in the window where change begins.

COACH’S SCIENCE BREAKDOWN

✔ Workouts are intentionally designed to challenge both strength and cardio to maximize metabolic benefits.

✔ Feeling fatigued or pushed in the early weeks means your body is being introduced to a new metabolic demand

✔ The goal is repeated exposure so your body can begin adapting and become more efficient – showing up is the goal.

AMA STYLE SOURCES — ARTICLE 1

  1. Tongwu Y, et al. The effectiveness of metabolic resistance training versus traditional resistance combined with interval modalities on metabolic health outcomes: a systematic review. 2025.
  2. Curovic I, et al. The role of resistance exercise-induced local metabolic stress in health and performance adaptation. Front Physiol. 2025.
  3. Gibala MJ, Little JP, Macdonald MJ, Hawley JA. Physiological adaptations to low-volume, high-intensity interval training in health and disease. J Physiol. 2012;590(5):1077-1084.
  4. Greer BK, O’Brien J, Hornbuckle LM, Panton LB. EPOC comparison between resistance training and high-intensity interval training in aerobically fit women. Int J Exerc Sci. 2021;14(2):1027-1035.
  5. da Silva RP, et al. Influence of resistance training variables on excess post-exercise oxygen consumption: a systematic review. ScientificWorldJournal. 2013;2013:825026.