With my crazy schedule, resistance-training time is at a premium. Those precious minutes in the gym are hard to come by, and I don’t want to waste a single one. But I always devote five to 10 minutes to a general warm-up and then carve out time for specific warm-ups before lifting weights.
I recommend the same for my clients and anyone who lifts weights.
It may seem like a big time commitment, but the small investment you make by warming up could save you weeks of inactivity from injury.
You’re looking for the sweet spot between an inadequate warm-up that’s a waste of time and an overly thorough one that wears you out before you even lay hands on the iron. Here are some principles to help you nail it.
The general warm-up
What it is: The general warm-up prepares your body for exercise. It does this by increasing your body temperature and increasing blood flow to your muscles.
A warm muscle that’s well supplied with blood is a more pliable one. It performs better and is less susceptible to injury.
The range of motion of your joints is also improved after a thorough warm-up.
A good warm-up even increases the speed of nerve impulse transmissions, which means faster communication between your brain, spinal cord, and limbs and thus improved physical performance.
What to do: Good choices include jumping rope, doing traditional calisthenics such as burpees and jumping jacks, and cardio activity that uses most of your body: walking briskly or jogging at a moderate pace while swinging your arms, using a rowing machine, or using an elliptical trainer that incorporates arm action.
You could also mix kettle-bell swings in with the calisthenics.
How long: Five to 10 minutes. The idea is to warm up long enough to break a sweat but not to do so much that you deplete your workout energy. The warm-up should leave you feeling energized and ready to attack the weights. In a cold environment, you may need more time. Older people may also benefit from a somewhat longer warm-up.
What to leave out: Static stretching, that is, holding a position for an extended period. Recent research indicates that in most cases stretching before exercise provides no protection against injury—and might even make you weaker in the sets you’re about to perform. The best time to stretch? At the end of the workout.
(Dynamic stretching can play a role in the pre-workout warm-up, but that’s a topic for another day.)
Now it’s time for the specific warm-up
What it is: As the name suggests, it prepares specific muscles, joints, and connective tissue for the precise strength-training moves you’re about to do. It’s a great opportunity for you to focus 100 percent on perfect form as you execute each movement with a light, manageable weight.
If you’re in a hurry, it’s better to skip some of your “work sets” than your specific warm-ups.
What to do: At least one warm-up set before you begin work sets of various lifts. An exception: When you’re doing high-rep exercises (like, for example, ab work at 20 to 50 or more reps per set), you don’t need a specific warm-up. You’re not handling heavy weight, and the warm-up is built into the set.
One set is usually adequate before moves that involve smaller muscles or put primary stress on a single muscle—for instance, bicep curls, tricep press downs, lateral raises for shoulders, or dumbbell rows.
But there are times you’ll want to perform more than one warm-up set:
- When you’re working large muscle groups (chest, back, legs) with multijoint movements such as the bench press, squat, or deadlift.
- When you’re planning to go heavy.
- When you’ve previously injured a specific area, even if it involves a single muscle and light weights.
So, for example, if you’re planning to go heavy on the bench press, you might perform as many as three warm-up sets in preparation.
Start with the rep range and weight indicated below, then work up to the poundage for your work sets.
How many reps and how much weight to use: The American College of Sports Medicine recommends warm-up sets of 12 to 15 reps at about 50 percent of the workout weight you’d normally lift 10 times.
How much rest: Give yourself from 30 seconds to three minutes’ rest between the specific warm-up and the work set.
What’s your history? Do you usually warm up before lifting? If not, have I persuaded you to start?


Jennifer is a 26 year old personal trainer living in Connecticut. She is "Coach Jen" at 





{ 13 comments… read them below or add one }
Very interesting! I’ve been doing intense cardio before weights, and then I don’t have enough energy!
Twitter: themusclediva
January 27, 2012 at 3:08 pm
Courtney–you bring up an excellent point. Intense cardio should either follow strength training or be performed on another day. Think of the warm-up as an appetizer—you don’t want so much that you’re not excited about the main course.
Good info! I’m always in a hurry and tend to not think about warm up as much as I should. Your article provides helpful guidelines about what to do and how to do it right. Thanks!
Yolanda´s last [type] ..How to Find Fresh New Ideas
Twitter: themusclediva
January 27, 2012 at 3:09 pm
Glad you enjoyed!
Twitter: saraharrow
January 28, 2012 at 6:30 am
*adds warm up to the to-do list*
I don’t warm up nearly as much as I should do
Sarah Arrow´s last [type] ..13 tools to make smarter use of Google Plus
Twitter: themusclediva
January 28, 2012 at 10:19 am
It can all seem overwhelming—but big payoffs in just a little investment of time.
I never warm up…just jump right in… *note to self to follow Mary’s advice*
Lisa´s last [type] ..WordPress 3.3 Is Out: Here’s What’s New
Twitter: WorkoutNirvana
February 1, 2012 at 7:29 pm
I always skimp as much as possible on my warm up lol. I cannot wait to get to the weights! But I do about 3 minutes of cardio and then a light warm-up set…. I also really like hanging from a chin up bar, it’s a fabulous stretch.
Suzanne´s last [type] ..Fitness Fails: Getting Real and Getting Help
Twitter: themusclediva
February 1, 2012 at 7:49 pm
Oh, I’m with you on hanging from the chin-up bar. It does feel delicious.
Mary C. Weaver, CSCS´s last [type] ..Fit into forty: Lose weight with Facebook
Twitter: ChristineMiller
February 2, 2012 at 6:39 am
I don’t belong to a gym, and do my exercise at home, I have a routine which warms up and warms down, with varying things in the middle….I agree completely about those first ten minutes, it sets the tome for the whole experience, wherever and whatever exercise one is doing.
Christine Miller´s last [type] ..How to be Happy
Twitter: Linda_Mattacks
February 7, 2012 at 10:27 am
Hi Mary
I normally like your stuff because you are so grounded and reasonable
That woman pictured at the top of this post, though: I just take one look and say to myself: “Never in a million years
Seriously, how much time would somebody with kind of physique invest to stay in tip top condition? Because I reckon she’d be on par with any athlete who was at the top of her game…
Linda Mattacks´s last [type] ..How profitable is your business and how much FUN is it?
Twitter: themusclediva
February 8, 2012 at 4:29 pm
Linda–The first question is really how many years of training would it take for a woman to achieve that kind of physique. The answer is shorter than you might think. Depending on her dedication and genetics, it could be as little as two years or perhaps three, four, or five.
How much time in the gym to maintain it? Again, less than you’d think. Four to six hours a week, I’d say.
Bear in mind that a primo physique–whether you’re male or female–is built not just in the gym but also in the kitchen. The reason our anonymous gorgeous female looks so “ripped” (muscular) is that very little body fat is hiding her lines.
Mary C. Weaver, CSCS´s last [type] ..Recent guest posts
Trainer perspective/male perspective. For the most part through the years, I see warming up less an issue with women than with men. Most of the gym savvy women I have known and worked out with take time for a modest to reasonable warm-up. I know far too many men who don’t. Can you guess who spends the most time dealing with the dings and pings of injury….?