Page 2 of 3
Double-Duty Tip #2: Skip the workout machines.
With a few sets of dumbbells (free weights), you can target every muscle group in your body without wasting time moving from machine to machine at the gym or switching between various pieces of equipment. It doesn't take much space to complete a dumbbell circuit either.
Double-Duty Tip #3: One side is better than two.
Why it works: Dumbbells help you develop power, strength, and endurance. In addition, they activate greater numbers of muscle fibers than exercise machines do (because machines passively hold your body in place, which doesn't require work on your part). You have to work harder to balance free weights yourself and maintain proper form and posture while performing each exercise. Dumbbells also help you achieve better balance and symmetry between both sides of the body; they demand your weak side to perform work unassisted by the dominant side. This forces both sides of your body to develop at the same rate. Dumbbells are a timesaving gem with minimal financial cost.
How to do it: For every gym machine exercise, there is a dumbbell equivalent. Find exercise ideas in SparkPeople's exercise library to get started. You can double your workout results and save precious time by pairing dumbbells and resistance bands. This research-tested shortcut also saves money (no need to purchase heavier dumbbells), and it adds variety to any exercise regimen.
It may be counterintuitive to think that performing an exercise using just one side of your body at a time (one-sided exercises, also called "unilateral" training) would give you better results in less time, but stick with me here. A few common examples of unilateral exercises include single-leg squats, one-arm dumbbell rows and single-arm lateral raises with a band.
Double-Duty Tip #4: Get on the circuit train.
Why it works: Not only do unilaterally trained muscles produce more force, but there are also other benefits to one-sided training that help you get more results for less time in the gym. For example, one-sided training can improve core strength by recruiting muscles of the lower back and abdomen to maintain posture, balance and coordination during each exercise. In addition, this technique thoroughly trains your stabilizer muscles, which create a solid body framework especially at the core, hip joints, and shoulders. Research also suggests a "crossover" effect: Performing one-sided exercises causes an increase in the strength of the untrained limb on the other side of the body. Finally, unilateral training adds variety to most workouts, offering a boost both physically and mentally.
How to do it: Double your results by combining one-sided training to both your upper and lower limbs at the same time. For example, perform a single arm dumbbell curl while standing on one leg. Another method to obtain twice the results is to perform a single arm chest press on a stability ball. The possibilities are endless, so be creative—just be sure to focus your creativity to one side of your body.
Developed in England in 1953, circuit training combines aerobic and strength-training exercises into a series of stations. Positioned around a given area, you visit each station in succession to perform the given exercise without resting between stations. While true circuit-training involves both strength and aerobic exercises (such as squats and jumping rope), you can also circuit train without adding the aerobic exercises at the gym or at home by moving quickly from one strength-training move to the next, reducing rest time and maximizing efficiency.
Why it works: Research suggests that circuit training is a time efficient method to enhance cardiovascular fitness and muscle endurance at the same time. There are so many advantages to this type of training: You can customize your circuit to suit your fitness goals; work alone or in small groups, which increases motivation and accountability; and add endless variety by changing up the exercise type, number and order. Save precious time at the gym by circuit training during your next workout, which will help you finish faster and give you both a cardio and a strength-training workout in one!
How to do it: To increase your calorie burn and muscle-building benefits, use heavier weights and perform fewer repetitions of each exercise. You can design your own circuit by simply moving quickly between each exercise in your planned workout without resting. For some 30-minute circuit-training workouts, click here.