MC MACROCHEF Kit Train Start All recipes

Hinge

Back extension

The hinge with your bodyweight and no bar. The swap when the grip or the lower back is the thing limiting a Romanian deadlift rather than the hamstrings.

Coming to the App Store

The movement pages are part of MacroChef Plus

How the lift is performed, what it trains, and where it belongs in a split — for all 67 movements. One subscription covers the training side and the whole recipe library.

How Plus works
Back extension, the movement
The movement
Trains
Spinal erectors, Glutes, Hamstrings
Programmed at
—
Used as
a swap for other movements

This one is not programmed directly — it is what you do when the first choice is taken or does not suit you. See the splits it stands in for.

The muscle itself

The erector spinae as paired columns running either side of the spine from the pelvis to the upper back.
They hold your spine still rather than move it. Their job in a lift is to stop something happening.

Everything else that trains this pattern

Training is the easy half

You will not build anything on the wrong number of calories, and most people are eating a long way under the protein they think they are. Get your daily number, then have the week built to it — every recipe on the site is costed from gram weights, so the figures are checkable rather than rounded up to sound better.