Learn dolphin pose (Ardha Pincha Mayurasana): shoulder blade activation, elbow width, what studies on plank, dog and eye pressure say and when to come out.
How long do I have to stay in dolphin for it to build strength? The honest answer: Less than you think, but with more quality. Dolphin pose (Ardha Pincha Mayurasana, "half peacock-feather pose") is a downward dog on the forearms: the forearms lie parallel on the floor, the hips are high, the head hangs between the upper arms. It is the standard stepping stone to forearm stand (Pincha Mayurasana) and headstand.
Why dolphin makes sense: in an EMG study with 14 healthy men, downward dog activated the oblique abdominals, the gluteus medius and the rectus femoris more than other support exercises such as the high plank [1]. In dolphin the body weight is, by practice estimate, distributed similarly, only the forearms rather than the hands are on the floor. That is a transfer, but the trunk works along here too. And the more body weight is on the arms, the more the shoulder blade muscles work, according to an EMG study with 21 men on plank variations [2].
How hard is it? Doable for beginners once downward dog is established. It demands shoulder strength and patience, not a stunt.
Come from all fours onto your forearms. The elbows are directly under the shoulders, the forearms parallel, not folded together. The palms lie on the floor.
Tuck your toes and lift your hips toward the ceiling. The legs may be slightly bent. The head hangs between the upper arms, the neck is long.
Milestone: You stay for 3 breaths with high hips, forearms pressing into the floor, back long.
Press the forearms actively into the floor and draw the shoulder blades wide and slightly up. It should feel as if you are pushing the floor away. This scapular control is what the pose trains: in a study with 24 female yoga athletes, measured in forearm stand and wheel pose, the activity of the lower trapezius and infraspinatus differed between women with and without scapular dyskinesis [3]. That is a transfer from forearm stand to dolphin.
Walk the feet in small steps closer to the forearms until the torso stands almost vertically over the shoulders. Your gaze goes between the hands or toward the feet.
Milestone to move on: 5 breaths with near feet, shoulders over elbows, no sagging. Then you practise forearm stand.
Stay for 5 breaths. Then lower the knees and sink into child's pose. Repeat two to three times. If your shoulders tire after the second round, end for today; clean practice beats many repetitions with sagging shoulders.
In dolphin the head is below heart height. Eye pressure was not measured in this pose, but it was in downward dog, which sits similarly: it raised the pressure after 2 minutes from 17 to up to 29 mmHg [5], after 90 seconds by about 16.5 mmHg in healthy people and 15.1 mmHg in glaucoma patients, with peaks above 31 mmHg; everything returned to baseline [4]. With glaucoma, clear dolphin with your eye doctor first.
The wrists do not automatically benefit either: a survey of 321 handstand practitioners (27% from yoga) found that 56.7% reported chronic wrist pain. That is a transfer from handstand, but dolphin is a wrist-friendly alternative [6]. This guide explains and motivates; it does not replace supervised training or medical advice.
Split the hold into portions. Count 5 breaths, then take 3 breaths of rest, then 5 again. That beats 15 breaths in a row with sagging shoulders. The pose trains scapular control; as soon as it fades, you only train sagging. Practice trick, not study-backed.
To start, 5 breaths, two to three times. That is a practice standard. More important than duration is that the shoulders do not sag and the back stays long.
Neither better nor worse, just different: the weight is on the forearms instead of the wrists. Studies on downward dog show high activity of the oblique abdominals and glutes [1]. For dolphin itself I found no measurement.
As a rule of thumb yes: dolphin is the stepping stone. It builds shoulder strength and control without you having to take your feet off the floor. Your goal is a calm dolphin for 5 breaths with near feet.
Not without medical clearance. The related downward dog raised eye pressure in glaucoma patients similarly to healthy people, by about 11 to 15 mmHg [4][5]. Dolphin itself was not measured. Clear the pose with your eye doctor.
Extended Side Angle (Utthita Parsvakonasana): Open the Side Body, Protect the Knee