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The Hour Glass
Deep core activation
Deep Core trains the hidden muscles that actually stabilise your spine and pelvis, in five minutes a day.
Your outer core, the six-pack, looks strong, but it doesn't stabilise you. Real stability comes from four deep muscles working together as one pressurised canister.
Together they brace your spine and pelvis before you lift, twist, or even breathe.
Choose from five science-backed exercises, ordered easiest to hardest.
A hands-free guided timer talks you through it: exhale, engage, inhale.
One session a day. Watch the chain grow and keep it alive.
Watch the breathing ring, the spoken cues and the celebration, all hands-free. No reps to count, no form to second-guess.
Progress at your pace, each one builds on the last.
Your deep internal corset, it wraps the spine and braces before every movement.
The base of the canister, lifting and supporting your core from below.
Small spinal stabilisers that lock your vertebrae together, segment by segment.
The breathing muscle that forms the lid and drives the pressure that switches it all on.
A long, forced exhale, up to twelve seconds, drives intra-abdominal pressure up. That pressure is what engages the deep core, hands-free, no crunching required. Deep Core simply guides the breath, and your body does the rest.
A 5-day streak feels good. A 50-day streak changes everything. Deep Core turns a daily five minutes into a habit you actually keep.
Your progress lives on your device and your personal iCloud. Analytics are strictly opt-in, and we never sell anything, ever. Read the full privacy policy →
Yes, download Deep Core and start your first guided session free on the App Store.
None. Just enough floor space to lie down. The whole session is hands-free and voice-guided.
Your exercise and streak data stays on your device and your personal iCloud. Analytics are opt-in, and we never sell your data. See our privacy policy.
Deep Core runs on iPhone with iOS 18 or later. It's iOS-only for now, no Android.
About five minutes. One short session a day is all it takes to build and keep your streak.
Five minutes a day for the muscles that hold you up. Your spine will thank you.