Joint angles · rest → load
- Torso
- 12.0° → 17.0°
- Hip
- 92.7° → 109.1°
- Knee
- 90.2° → 101.2°
- Shoulder
- 18.5° → 18.5°
- Elbow
- 41.0° → 41.0°
- Neck
- -10.0° → -10.0°
Seated
Seated Hands-Back Bridge
Weight shared to the arms with a hip drive. Scapular and glute load together.
On a chair or the edge of a surface. Moderate cost with a large mobility demand at the hip — the seated families expose adductor and hamstring restriction faster than any other.
Muscle groups loaded
- Core
- Adductors
- Hip flexors
- Scapular push
Limiting capacity
Mobility limits this posture. Hip, adductor and thoracic range. Determines which positions are available and comfortable.
Intensity
What it costs, by role
| Role | METs | Band | Active-minute credit |
|---|---|---|---|
| Active role | 6.0 | Vigorous | 2× |
| Receiving role | 4.7 | Moderate | 1× |
Light is under 3.0 METs, moderate 3.0–5.9, vigorous 6.0 and above (CDC). A session averaging at or above the vigorous line has its minutes credited at 2× in the Active Minutes ledger.
Energy
Modelled kilocalories
| Role · reference body | 10 min | 20 min | 30 min | 45 min |
|---|---|---|---|---|
| Active role · Male 82 kg | 86 | 172 | 258 | 387 |
| Active role · Female 68 kg | 71 | 143 | 214 | 321 |
| Receiving role · Male 82 kg | 67 | 135 | 202 | 304 |
| Receiving role · Female 68 kg | 56 | 112 | 168 | 252 |
Estimates, not measurements
Every energy figure here is a modelled estimate, not a measurement. No study has measured cost position by position — the measured quantity is the session average (6.0 METs for men, 5.6 for women, Frappier 2013). These values distribute around that anchor by mechanical demand.
kcal = METs × 3.5 × bodyweight(kg) ÷ 200 × minutes (ACSM)
Values scale linearly with your own mass. If a position causes pain rather than effort, stop and see a clinician.
Mobility gate
Seated straddle to 70° total abduction with a tall spine.
Clear the gate before adding load or duration here. If range is the thing standing in the way, Open Hips is the block that builds it.
Prescribed preparation
01
90/90 hip switch
Seated, rotate knees floor to floor under control. 3 x 8/side.
02
Cossack squat
Wide stance, sit to one side, other leg straight. 3 x 6/side.
03
Pallof press
Anti-rotation. Press out and hold. 3 x 10/side, 2s hold.
04
Eccentric release
Contract briefly, then lengthen over 6s. The half everyone skips. 3 x 10.
05
Zone 2 base
30–45 min conversational pace, 3–4x/week. The foundation under everything.
Cross-reference
Workouts that build this position · 16
Each of these loads the qualities this posture asks for. Equipment, modelled calories and the muscle groups worked are on every workout page.
- StrengthBent-Over RowBarbell5.2
- MobilityLoaded Jefferson CurlDumbbells, Box or step3.0
- ControlDead BugMat2.8
- ControlDiaphragmatic Breath PatternMat1.8
- MentalityBody-Scan Presence DrillMat1.5
- EnduranceRowing IntervalsRower8.5
- MobilityCossack SquatNone4.2
- ControlPallof PressResistance band3.4
- MobilityDeep Squat HoldNone3.2
- MobilityNinety-Ninety Hip SwitchMat2.8
- MobilityAdductor Rock-BackMat2.6
- MobilityThoracic Open BookMat2.5
- MentalityReset ProtocolNone1.6
- MentalityPre-Session RoutineNone2.0
- ControlPelvic Floor HoldNone2.0
- MentalityBox BreathingNone1.6