Dynamic tension builds strength with no equipment by tensing your muscles through slow, controlled movement. Here is how it works and two routines Master Phil Ross teaches.

Dynamic tension exercises build strength without weights. You tense your muscles on purpose, often pressing one part of your body against another, and move slowly through a full range of motion while holding that tension. All you need is a little floor space and focused effort.
Dynamic tension is one of the three parts of the BodyBell Method®, along with kettlebells and calisthenics. This guide explains what it is, how it differs from isometric exercise, and two routines Master Phil Ross teaches, with his videos so you can follow along.
Dynamic tension is a form of self-resistance training. Instead of lifting a weight, you create the resistance yourself by contracting the muscles around a joint, or by pushing one hand against the other, while you move. The movements are slow, often a count of five in each direction, so the muscles stay under tension for the whole repetition.
The method is best known through Charles Atlas, born Angelo Siciliano (1892 to 1972). He could not afford barbells as a young man, so he built a system of working one muscle group against another. It became known as Dynamic-Tension and was the basis of his mail-order bodybuilding course.
The two are related but not the same. In an isometric exercise, the muscle works but the joint does not move, as in a plank or a wall sit. In dynamic tension, you keep the muscles tense while the joint moves through a range of motion. A slow power prayer, where the palms press together while the hands travel out and back, is dynamic tension. Pressing the palms together and holding them in one spot is isometric.
Dynamic tension also has limits. With no weight to load, progress is hard to measure, and you cannot keep adding resistance the way you can with a kettlebell. That is why the BodyBell Method uses dynamic tension alongside kettlebells and calisthenics rather than in place of them.
This routine comes from Phil's Technique of the Week video on beginner dynamic tension. He put it together for people who need to get moving again. Do 5 to 10 slow repetitions of each movement. You can work up to 15.
In his video "Dynamic Tension. Old School Training!", Phil shows a short three-movement workout in the style of the old-time strongmen. Every rep is slow: five seconds out and five seconds back.
Phil does 2 or 3 sets of the circuit.
For most healthy adults it is, as long as the movements stay slow and controlled. Check with your doctor first if you have high blood pressure, heart disease, a recent injury or pain that limits how you move. Stop any exercise that causes sharp pain.
The BodyBell Method combines three ways of training: kettlebells for strength and power, calisthenics for bodyweight control, and dynamic tension for full-body tension and control with no equipment. BodyBell Method certified instructors learn to teach all three.
If you are a trainer, coach or physical therapist, the BodyBell Method certification teaches you to use dynamic tension with your clients, and the online kettlebell certification covers the method one-on-one in eight virtual sessions. If you are over 50, read our guide to kettlebell training after 50 next. More of Phil's technique videos are on his YouTube channel.
What are dynamic tension exercises?
They are exercises where you create resistance by tensing your own muscles, often pressing one part of your body against another, while moving slowly through a full range of motion. No weights are needed.
Who created dynamic tension?
The method is most closely linked to Charles Atlas, who developed a system of working one muscle group against another and built a mail-order bodybuilding course around it.
Can you build strength with dynamic tension?
Yes, especially if you are new to training or returning after time off. Because the resistance comes from your own effort, progress depends on how hard you press and squeeze. Combining it with loaded training, such as kettlebells, lets you keep progressing.
How many reps and sets should I do?
Phil's beginner routine uses 5 to 10 slow reps of each movement, up to 15. In his classic workout, each rep takes about ten seconds, and he does 2 or 3 sets.
Is dynamic tension good for older adults?
It can be a gentle way to start building strength and body control, because there is no weight to manage and the pace is slow. Check with your doctor first if you have a heart condition or high blood pressure, and breathe steadily throughout.
Teach kettlebell training, bodyweight exercises and dynamic tension with the BodyBell Method. The certification is approved for continuing education credits by NASM, ACE and AFAA.