Busted: 5 Fitness Myths That Are Holding You Back

Busted: 5 Fitness Myths That Are Holding You Back

Published by Rising Sun Community Fitness | East Nashville’s Functional Fitness Community

The fitness world has a misinformation problem. Between social media, bro-science passed down at globo gyms, and well-meaning but outdated advice from decades past, a lot of people are working harder than they need to — or avoiding things that would genuinely help them.

At Rising Sun Community Fitness, part of our job is to cut through the noise. Today, we’re busting five of the most persistent fitness myths we hear — and replacing them with what the science and real-world experience actually show.

Myth #1: Lifting Heavy Will Make You “Bulky”

The Reality: Building significant muscle mass requires a very specific combination of high training volume, caloric surplus, and — for women in particular — a hormonal environment that most people don’t have. Picking up heavier weights won’t accidentally make you look like a competitive bodybuilder. What it will do is make you stronger, improve your body composition (less fat, more lean muscle), increase your bone density, and boost your metabolism.

The women in our classes who lift heavy are some of the leanest, most functional athletes we have. Strength is not a look — it’s a capability. And the look it tends to produce? Most people call it “toned.”

Myth #2: You Need to Feel Sore to Know You Had a Good Workout

The Reality: Delayed Onset Muscle Soreness (DOMS) is caused by microscopic damage to muscle fibers — particularly from eccentric (lengthening under load) movements or novel stimuli. It is not a reliable indicator of workout effectiveness.

Once your body adapts to a movement pattern or training stimulus, soreness decreases — even if the workout is producing significant strength or endurance adaptations. Chasing soreness as a metric is a recipe for overtraining and chronic fatigue.

Better metrics for workout quality: Did you move well? Did you hit your targets? Are you recovering and progressing over time? Those matter far more than whether you can’t sit down on Tuesday after a Monday leg day.

Myth #3: Cardio Is the Best Way to Lose Fat

The Reality: Cardio burns calories during the session, which is useful. But it does very little to change your resting metabolic rate (RMR) — the number of calories your body burns just to exist. Resistance training does.

Every pound of muscle you build increases your RMR, meaning you burn more calories around the clock — not just during exercise. High-intensity functional training, like what we do at Rising Sun, combines the cardiovascular benefits of traditional cardio with the muscle-building stimulus of resistance training. You get both in one session.

Combine that with smart nutrition, and you have a sustainable fat loss strategy that goes well beyond “more treadmill time.”

Myth #4: Functional Fitness Training Is Too Intense for Beginners

The Reality: This might be the myth we hear most often — and it’s the one we most love to disprove. Every movement in functional training exists on a spectrum. A deadlift can be done with a kettlebell by a 60-year-old who’s never lifted before. A squat can be scaled to a box sit. A pull-up can begin as a ring row.

At Rising Sun, our coaches scale every workout to every athlete, regardless of age, fitness level, or injury history. The workouts are designed to challenge — but “challenge” is relative. A beginner doing 50% intensity on a scaled version of a workout is getting just as meaningful a stimulus as an experienced athlete doing the full version. The principles of intensity, consistency, and progressive overload apply at every level.

The only thing that disqualifies someone from functional fitness is not showing up. Everything else is coachable.

Myth #5: Stretching Before a Workout Prevents Injury

The Reality: Static stretching — the kind where you hold a position for 20–60 seconds — performed before a workout has not been shown to prevent injury. In fact, research suggests that static stretching immediately before strength or power-based activity may temporarily reduce force production.

What does prevent injury is a proper dynamic warm-up: movement-based prep that raises tissue temperature, activates target muscles, and grooves movement patterns. Save the long static stretching holds for after your workout or a dedicated mobility session, when your tissues are warm and recovery — not performance — is the goal.

This doesn’t mean flexibility work is useless — it absolutely isn’t. But timing and method matter. Dynamic before, static and passive after.

The Bigger Picture

Fitness myths persist because they’re often partially true, intuitively appealing, or repeated by people we trust. The antidote is a combination of good coaching, quality information, and honest self-assessment.

At Rising Sun Community Fitness, we take the “community” part of our name seriously. That means we’re not here to sell you a program — we’re here to build your long-term relationship with fitness. And that starts with making sure the foundation is built on facts, not folklore.

Have a fitness question or a myth you’ve always wondered about? Drop it in the comments or come talk to one of our coaches. We’re in East Nashville, and we’re always happy to geek out about training with you.

Rising Sun Community Fitness | East Nashville | Group Fitness · Personal Training · Small Group PT · Nutrition Coaching