One of the things I love most about yoga is how it can meet our needs moment to moment. Sometimes we need energy and strength, while other times we need stretch or restoration. The fun thing is some postures can do all the above depending on how you approach them. I can think of no better pose to explore this than bridge pose. In bridge pose you can have a range of experiences depending on the variation you choose.
Generally speaking, bridge pose, in its active variation, is a strengthening and energizing posture. Just after my first baby was born, I chose bridge pose as my first strengthening pose to do. I recall how wobbly my legs felt as I attempted to lift my hips off the ground; I remember thinking to myself, “Oh man, have I ever lost a lot of strength!” From this first attempt, I continued to practice bridge daily. By the second week I was back to my regular hip lifting height and I no longer felt weakness in my legs and hips as I held the pose longer and longer. As I began to engage the pose in more of a chest opening posture, I felt my posture improve and my breath deepen, bringing more energy into my body. This experience made me truly appreciate how this pose has great strength building potential and is fantastic for beginners as it allows for you to decide how high and how long you lift for.
Below is an info-graphic showing the technique and benefits of the active variation of bridge pose. It is important to note you can start with a lower lift of the hips off of the ground than shown. Also, you can completely leave out clasping the hands under the body (resting arms on the ground). The practice of tucking the shoulders underneath the body and squeezing the shoulder blades together facilitates a lift of the chest with the pose and engages many more back muscles, making the experience deeper and more complex. When first learning it helps to start with the hip lifting aspect of the pose, and later build on this piece.
People often ask me if they should activate their abdominal muscles in bridge, and I tell them “It depends…” You can do it both ways depending on your goal of the pose and any back conditions you may have. Generally speaking, when you tighten or activate the abdominal muscles it makes the pose feel more stable in the lumbar (low back) region. If you are one of those people who has tight hip flexors muscles you may be prone to over-extending the low back, and in this case it will likely help to engage the abdominals when lifting into bridge which can essentially help ‘lock’ the low back into position and will most likely feel better if you have this condition. However, for some people, it is possible that going into more extension in the back will feel helpful, especially if they tend to be in postures which flatten out the low back a lot. So by relaxing the abdomen and really emphasizing the contraction of the gluteal and back extensor muscles they can increase the back arch and this can feel therapeutic. Often I recommend trying both ways to sense what feels better in your body to know which way to go.
These next images (below) demonstrate variations of bridge pose which provide support with props, and with this support, comes a whole different experience to the posture. Supporting bridge pose makes it passive rather than active, and therefore it is no longer a strengthening posture; instead it becomes restorative. When placing the props underneath the sacrum (the lowest portion of the spine just above the tail bone), the props create a gentle stretch into the front of the hips and a light traction of the low back. From here you can work on relaxing the support muscles of the pose and in this way we can experience the shape and stretch of the pose without the effort, allowing our bodies to rest and release tension. In addition, when using the foam block you can also experience a light acupressure sensation against the sacrum region and that can sometimes help reduce back pain.
I have had some yoga clients in class tell me they felt so relaxed in this posture, but didn’t know why. The reason is likely because supported bridge pose is also a gentle inversion and inversions have a calming effect on the body. When the lower body is elevated from the upper body, gravity’s pull of blood towards our hearts and heads toggles our nervous systems to turn off the sympathetic “flight or fight” stress response while turning on the parasympathetic “rest and digest” response. This happens in a complicated feedback loop that starts when blood pressure accumulates in the aortic arch above the heart and the carotid arteries in the neck. The final result is reduced heart rate, reduced blood pressure, a breakdown of the stress hormones in the body (cortisol and adrenaline), and a quieting of the “chatterbox” centers within the brain itself which is hugely beneficial when we are feeling stressed and anxious.
The next image below shows a fully inverted version of supported bridge pose which helps to heighten the inversion effects. It is also different in that it focuses on opening the front body more at the chest level, extending mid/upper back. For some this feels like a really big opening experience so using a height that is lower than the bolster shown in the image (e.g. a rolled blanked) might be a way to try in the beginning.

Bridge pose is full of experiences and what I have highlighted here just scratches the surface of the myriad of ways it can be altered for varying effects. Hopefully this provides you with enough information to get exploring how bridge pose can benefit you.
For a free printable of the info-graphic shown above link here: bridge pose.pdf