Building a strong core is one of the most worthwhile things you can do for your body outdoors and in, not because it looks good under a base layer, but because a solid midsection keeps you moving better, breathing easier and carrying a loaded pack without your lower back staging a revolt. The internet is currently besotted with Hollywood training regimes, but the real-world principles behind a functional, resilient core are both more modest and more enduring than anything a film studio demands of its leading men.
Set a realistic timeline for building a strong core
Celebrity personal trainer Michael Baah draws a clear line between two goals. If your aim is core strength alone, he says you can make solid progress in around four to six weeks with consistent training. Visible abs are a different matter. An average-framed person starting at roughly 18–20% body fat should expect “12–20 weeks is a realistic and sustainable timeframe,” according to Baah, with fat loss tracking at “roughly 0.5–1% of your body weight per week.” Push harder than that and he warns of “muscle loss, metabolic slowdown, and rebound weight gain.” Patience, in other words, is not optional.
Genetics do a fair amount of the deciding, too. Baah puts it plainly: “40–60% of your ab shape and structure is genetic. The pattern, spacing, and whether you have a 4-, 6-, or 8-pack is set before you start training. You cannot change the architecture.” What you can change is the foundation beneath it.
Three buckets that cover every angle
Simon Waterson, trainer to the film stars and ex-marine commando, organises his core work into three groupings. The first is everything face-down: plank, plank to pike, shoulder taps and the hands-to-elbows progression. The second is face-up: leg raises with the lower back pressed firmly into the floor, weighted crunches using a dumbbell, kettlebell or plate, and Russian twists with feet held six inches off the ground throughout.
His third category covers external aids, ab rollers and hanging work. The ab roller, which Waterson used with Daniel Craig in preparation for No Time to Die, involves kneeling with ankles crossed, rolling out as far as control allows, then contracting back. Hanging knee raises progressing into windscreen wipers (knees rotated to each side) round out a session that hits the obliques as hard as the rectus abdominis. For anyone who has worked with Waterson, that breadth of roster speaks to how repeatable these methods are: The Gentleman’s Journal reports he has trained Jake Gyllenhaal, Luke Evans and Chris Pratt alongside his Bond work, and that his Bond relationship stretches back further than Craig, with Pierce Brosnan having worked with him through The World is Not Enough and Die Another Day.
Waterson is clear that core training must not be overly linear. Rotation matters as much as forward flexion. Low-cable wood chops, Russian twists and Swiss-ball cable rotations recruit the obliques in ways that straight crunches never will. “An eclectic mix” covering upper, lower and side abs, combining isotonic and isometric work, is what he recommends.
Resistance, rest and the limits of loading
Many people resist adding weight to ab exercises, but Waterson trains the core like any other muscle group, progressively increasing resistance over time. There is, however, a ceiling. Baah points to research indicating that weighted ab exercises plateau in core activation at roughly 70–80% of your ten-rep maximum. Beyond that, hip flexors, lower back and quads take over. “For most people, 10–20lbs is the practical upper limit but form is the only true measure,” he says. If you cannot control the load through the full range of motion, the weight is too heavy. Drop it, slow the tempo, or add reps instead.
Waterson’s preferred approach to scheduling is to slot ab work between other lifts rather than tacking it onto the end of every session or, worse, dedicating an entire day to it. He would not train abs on leg day, when they are already working hard through squats.
Nutrition and the year-round approach
Rowan Clift, training and nutrition specialist at Freeletics, puts it directly: “Visible abs are the result of a strong core and a low enough body fat percentage. That means eating whole, unprocessed foods, prioritising protein, and maintaining a calorie balance that supports fat loss without being extreme.” Abbie Watkins, personal trainer at OriGym, adds that sustainability depends on enjoyment: a diet you cannot live with will not hold through winter, let alone the years required to build something lasting.
Baah’s preferred cycle avoids the summer-panic shred: spend 12–16 weeks building ab muscle at maintenance or a slight calorie surplus, then a focused four-to-six-week cut to reveal the growth. Repeat. “The six-pack isn’t seasonal,” he says. “It’s a byproduct of structure, not suffering.” A core built for the hill, the tarn or the via ferrata operates on exactly that logic: built steadily, used constantly, never abandoned when the season turns.
