In a recent LinkedIn post, Liz Bradford challenges common fitness assumptions, particularly for individuals over 40, arguing that traditional endurance-focused workouts may not yield the desired results for metabolism and body composition.
Bradford highlights a common scenario: dedicating significant time to activities like spin classes without seeing the expected changes on the scale or in overall fitness. She contrasts this with the noticeable progress of friends who incorporate weightlifting into their routines.
As Liz Bradford points out:
“Your metabolism isn’t broken. It’s just operating under new management. That spin class hour burns calories while you’re moving, then clocks out for the day. But muscle? Muscle works the night shift. Burns calories while you sleep. While you sit through meetings. While you do absolutely nothing.”
The Metabolic Advantage of Muscle
The core of Bradford’s argument centers on the distinct metabolic roles of cardiovascular exercise versus strength training. While cardio is valuable for immediate calorie burn and heart health, she explains that muscle mass provides a sustained metabolic boost throughout the day and night.
Bradford emphasizes that muscle is crucial for maintaining body composition and metabolic rate, especially after age 40, a period when natural muscle loss can occur if not actively counteracted. She states:
“Muscle is the line you’re trying to hold after 40. Every year you don’t actively defend it, you lose a little more. Your metabolism downshifts. Body composition changes. The scale stays the same, but nothing else does.”
Strategic Strength Training for Lasting Results
To combat this metabolic shift, Liz Bradford advocates for a strategic approach to resistance training, recommending a minimum of two sessions per week, with three being ideal.
Prioritizing Compound Movements
She advises focusing on compound exercises that engage multiple muscle groups simultaneously, such as squats, deadlifts, push-ups, rows, and carries. These movements, she argues, offer a greater return on time investment compared to isolation exercises.
The Importance of Progressive Overload
Bradford stresses that the effectiveness of these workouts lies in progressive overload – consistently challenging the muscles to do more. This could mean increasing the weight, the number of repetitions, or both.
“Progression is where the magic lives. This week you manage 20kg for eight reps. Next week, maybe 22kg. Or squeeze out ten reps at 20kg. Your body adapts to whatever you consistently demand from it. Demand more, get more. Demand the same forever, stop changing.”
She clarifies that this isn’t about becoming an extreme athlete, but about working *with* the body’s changing physiology.
Fueling Muscle Growth and Maintenance
Beyond exercise, Bradford touches on the importance of consistent protein intake, suggesting a target of 1.6 to 2.2 grams per kilogram of body weight, distributed throughout the day. This steady supply of protein is essential for building and retaining the muscle mass being developed.
Balancing Cardio and Strength
While advocating for strength training, Bradford does not suggest abandoning cardiovascular exercise. She acknowledges its vital role in heart health, stress management, and energy levels. However, she positions cardio as a complementary activity rather than the primary driver for metabolic changes after 40.
Ultimately, Liz Bradford’s message on LinkedIn is one of adaptation and informed strategy. She encourages individuals to shift from outdated fitness approaches to methods that align with their body’s current needs, leading to sustainable strength, improved body composition, and greater confidence.
📝 About This Content
This article is based on insights shared by Liz Bradford on LinkedIn.
📅 Originally posted on May 23, 2026 | View original post on LinkedIn →