Why “warming up” really matters before you work out

by | Nov 5, 2026

This is part of an ongoing series from PhinneyWood’s own Seattle Strength & Performance.

If you’re new to strength training and starting to put together your own workouts, the warm-up is probably the part you’re most tempted to skip or rush through. A few arm circles and a quick jog in place is good enough, right? Here’s the thing: the warm-up is so important. Done well, it prepares your body and your brain for the work ahead, reduces your injury risk, and genuinely makes you stronger during the session. The good news is that building an effective warm-up isn’t complicated. You just need to know what it’s supposed to do.

What a Warm-Up Is Actually For

A great warm up does three things:

  • Physically, it raises your heart rate, increases blood flow to your muscles, and gets your tissues warm and ready to work. Cold muscles don’t perform as well and are more prone to injury.
  • Neurologically, it wakes up your nervous system and gets your muscles communicating and coordinating the way they need to under load.
  • Mentally, it shifts your focus from whatever you were doing before you walked in (your commute, your inbox, your to-do list) and brings your attention into the room and into your body. That mental shift matters more than most people realize.

The Four Things Every Warm-Up Should Do

A helpful way to think about warm-up structure is R.A.M.P.:

  • Raise — Get your heart rate up, increase muscle temperature, and get blood moving. This is the general movement phase: think light cardio, dynamic movements, anything that gets the body going.
  • Activate — Wake up the stabilizer muscles and get your nervous system coordinating. This might be a glute bridge, a dead bug, or a single-leg balance hold. Use movements that ask specific muscles to engage before you load them.
  • Mobilize — Take your joints through their full range of motion, specific to what you’re training that day. If you’re squatting, your hips and ankles need attention. If you’re pressing, your shoulders and thoracic spine need to move. Mobility work here isn’t static stretching. Mobility is active, controlled movement through range.
  • Potentiate — Bridge the gap between your warm-up and your working sets with movements that mimic what you’re about to do. This is where warm-up sets live. A lighter, intentional set of your main movement before you go to your working weight gives your body a final chance to dial in the pattern before the real load goes on.

A Few Practical Tips

Keep it simple, especially when you’re starting out. The best warm-up is one you’ll actually do, which means it doesn’t need to be elaborate or take forever. Five to ten minutes of intentional preparation is more than enough for most sessions.

Match your warm-up to your training day. If you’re squatting, prioritize hip and ankle mobility. If you’re doing upper body work, open up your shoulders and thoracic spine. The warm up should feel like a natural lead-in to what comes next, not a generic routine you do regardless of the day.

Don’t underestimate the mental side of it. Walking into a session scattered and walking out focused is part of what a good warm-up does. Give yourself permission to actually arrive before you start lifting.

The Bottom Line

Skipping the warm-up to save time is one of the most counterproductive things you can do in the gym. It increases your injury risk, compromises your performance, and skips the part of training that builds the movement quality everything else depends on.

A few intentional minutes at the start of your session: raising your heart rate, waking up your stabilizers, mobilizing your joints, and dialing in the pattern is what separates a good session from a great one.

Want to learn how to build a training program that works for your goals and your life? Book a free assessment at SSP and let’s figure it out together.