The gym never goes to plan
The bench is taken. The cable machine is broken. The hotel gym has three dumbbells and a prayer.
“Someone’s doing curls in the squat rack. Again.”
Your programme says barbell back squat. Every rack is taken. You’re standing around losing your pump and your patience. FLEX lists alternatives that work the same main muscles, such as a leg press or a goblet squat, so you can keep going.
“The hotel gym is two dumbbells and a treadmill.”
You’re travelling. The “fitness centre” is a cupboard with a bench and dumbbells that stop at 20kg. Swap each barbell lift for a dumbbell or bodyweight one from the list, one exercise at a time.
“The bench is taken and the queue is three deep.”
You don’t want to skip pressing, and you don’t want to wait. FLEX shows dumbbell, machine and bodyweight presses for the same muscles, and the one you pick drops into the session.
“The cable machine has been ‘out of order’ for three weeks.”
Half your accessories rely on cables. The machine has had an “out of order” sign on it since January. For each cable movement, FLEX lists alternatives for the same muscles, so you can pick one that doesn’t need the cable stack.
Not just any alternative — the right one
Every alternative shares at least one main muscle with the original, and the list is ranked on how closely it matches: the muscles, the movement pattern, compound or isolation, one side or both, body position and equipment.
Tap VALDAFLEX
You’re mid-session and the equipment isn’t available. Tap the VALDAFLEX button on that exercise in your workout.
Pick your swap
FLEX shows up to 15 alternatives, closest match first: same main muscles, then a similar movement pattern.
Keep training
The swap takes the original’s place in your session, in the same position, and your workout carries on.
Intelligent matching, not guesswork
Muscle group matching
Every alternative works at least one of the original's main muscles, and the more muscles it shares, the higher it ranks. Chest day stays chest day.
One-tap mid-session swaps
Tap VALDAFLEX on an exercise during your workout and FLEX shows ranked alternatives. One tap on Swap and it's in.
A full exercise library behind every swap
Barbell, dumbbell, machine, cable, band and bodyweight, each with its own page, history and records, so a swap is rarely more than a tap away, whatever your setup. Browse the library.
Stop skipping exercises. Start swapping smarter.
Equipment problems shouldn't derail your session. FLEX keeps your workout on track, whatever the gym throws at you.