Prevent Injury by Waking Up Sleepy Muscles Before You Workout
A simple guide to activating lazy muscles for a safer and more effective workout.
New Year’s resolutions, an upcoming wedding, a beach trip – these moments are powerful motivators to get moving. And when that motivation hits, you want to ride that momentum into healthier routines.
And there’s nothing more frustrating than feeling mentally ready to train, only to get sidelined by a preventable injury. Jumping straight into exercise without activating the right muscles is one of the most common ways people end up injured.
Which is why this “Activation Guide” was created!
So, before you jump into a workout, there’s one step that will make all the difference – waking up your sleepy muscles first.
Step 1: Always Warm Up
This one goes all the way back to middle school PE class – and it’s still true. Think of not-warmed muscles like uncooked spaghetti: stiff, inflexible, and easy to snap. A proper warm-up brings blood flow and mobility to your joints, prepping your body to move safely.
If you’re looking for guidance, follow-along with this 10-Minute Dynamic Warm-Up To Prevent Injury https://youtu.be/vH0KPpZzpu4?si=vqY3DusC2SAUJG0_
Step 2: Activate Sleepy Muscles
This is where injury prevention really happens.
Muscle activation exercises “switch on” the muscles that tend to go quiet – making your workouts more efficient and far more effective. When sleepy or underused muscles aren’t firing properly, your body compensates by relying on the same tight, overworked muscles it always uses. Over time, that compensation pattern is exactly why your body can keep looking and feeling the same, no matter how hard you train.
How do you know if a muscle is “sleepy”?
- You feel little to no contraction during an exercise meant to target that muscle
- You feel other muscles working instead – often the ones surrounding the target area
- You experience soreness or pain elsewhere afterward – commonly in the lower back, neck, or knees
Why does this happen?
A few common culprits:
- Habitual movement patterns. Moving your body in an unfamiliar pattern requires your muscles to “learn” (or relearn) how to do the job.
- Underuse. If you don’t use it, you lose it.
- Compensating tension elsewhere. Tightness in one area can prevent a different muscle from doing its job.
- Past injury. Scar tissue and nerve disruption from an old injury can limit range of motion and reduce muscle engagement long after the injury has “healed.”
The Real Fix: The Mind-Body Connection
Whatever the root cause, it all comes back to one fundamental thing: your mind and body have to communicate.
Every muscle contraction starts with a signal – your brain, through your nervous system, sending a message to that part of your body. Your mind is literally talking to your body.
So before you start your workout:
- Take a breath
- Feel your body
- Ask yourself what muscles you’re about to train – are you focused on glutes, core, shoulders?
- Identify which of those areas tend to feel “sleepy” for you
- Add a few targeted activation exercises into your warm-up to reconnect with them
If your workout is body-part focused (like a leg day), prioritize activation for that region specifically.
Below is a breakdown of the most common sleepy muscle groups, where you might feel the resulting aches and pains, and simple exercises to help wake them back up.
Common “Sleepy” Muscle Activation Guide
Goal: Switch on sleepy muscles and strengthen the mind-body connection BEFORE you train
Get a more in-depth description by watching this YouTube workshop: How to Activate Sleepy Muscles and Prevent Injury
Core
The gist: drawing in vs. pushing out
Common pain areas when the core isn’t firing: lower back
Activation exercises for the core muscles:
- Supine Breath, alt leg lifts
- Seated & V-sit breath
- ½ way lift breath – option for kneeling or prone
- Ignite with Breath of Fire
Follow-along with this 10-minute Deep Core Workout: https://youtu.be/ABXOyJ52L8g
Glutes
The gist: engaging without altering lumbar spine alignment, aka: “dumping into lower back”
Common pain areas when the glutes aren’t firing: hip flexors, low back, knees, feet/ankles
Activation exercises for the glute muscles:
- Side lying legs – clams, lift n lower, stomp, circles
- Prone – froggers, straight leg lifts
- TT – (block on back) hydrants, circles, straight leg, donkey kicks
- Banded abductor lateral squat walks
- Banded hip extension & internal rotation
- Straight leg lateral walks
Follow-along with this Pilates glute activation video: https://youtu.be/ShYwyjmhi_o
Upper Back & Shoulder Stabilizers
The gist: getting the scapula to move, slide, and glide
Common pain areas when the shoulder stabilizers aren’t firing: upper traps, neck, jaw
Activation exercises for shoulder stabilizers:
- Prone scap isos
- Banded Pull Aparts
- Banded Single Arm Lat Pulls
Bottom line: Trust that you know your body best.
Getting the most out of your workout starts with reconnecting your mind to your body. So take a breath, focus, and feel into what muscle you’re trying to activate.
Find which “activation” exercises work for your body – and use them.
You got this!
-Jessi Rose
