"These are the exercises I always come back to"—an expert trainer shares five of the best moves to build strong abs

Woman in a high plank position wearing white crop top and sky blue leggings smiling in front of laptop in room with plant in the corner .

There are many ways to strengthen your core muscles, but simple is often best. Unless you're able to perform hundreds of sit-ups without breaking a sweat, bodyweight movements are all you need to train your abs.

And it looks like trainer Kayla Itsines shares this belief. The trainer and founder of workout app Sweat recently highlighted five of her go-to abs moves in an Instagram post—all equipment-free and firm favorites.