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Denise Austin<\/a> never fails us with her fitness tips, whether she\u2019s sharing her glute-strength secrets<\/a> or getting us ready for summer with a full-body workout<\/a>. No matter what type of workout she\u2019s focusing on, we can always count on her for quick, accessible exercises that are easy to incorporate into our routines. The fitness pro\u2019s latest video is no different, as she recently took to Instagram to share her \u201call-time favorite\u201d moves for a \u201ctight tummy.\u201d<\/p>\n \u201cI always get asked how to get a flat, rock hard tummy\u2026. It\u2019s the number 1 question I get,\u201d Austin captioned her Instagram post<\/a>. \u201cHere are 3 of my all-time favorite moves you can do right at home!! No equipment needed\u2026They\u2019re easy to do\u2026don\u2019t require much space\u2026 and are a great way to get your body moving!! And focus your attention to tighten and engage your abs!!!\u201d<\/p>\n Like many of the other Austin-approved workouts we\u2019ve come to know and love, Austin recommends doing each move in the set for one minute, so you only need a few moments to spare. If you want to try it out for yourself, we\u2019ve got you covered with the details on each move below.<\/p>\n High knees<\/p>\n First up, Austin begins by standing with her feet shoulder-width distance apart and her hands behind her head. She then lifts one knee up toward her chest before putting it down and lifting the other one. \u201c[This] first one works the front of your abs, and the lower tummy,\u201d she explains. \u201cPull your tummy in and zip up those abs!\u201d<\/p>\n Upper body twists<\/p>\n For the next core exercise<\/a>, Austin widens her stance to be in more of a straddle position, with her feet parallel and her elbows bent toward her chest. \u201cWhat I want you to do is twist to the side and over,\u201d she demonstrates, twisting her upper body to one side while extending the opposite arm out straight across her chest, then repeating the motion on the other side. \u201cThis is like a torso trimmer,\u201d she explains.<\/p>\n Lunge variation<\/p>\n For the third and final exercise, which Austin says \u201creally works the front of those abs,\u201d Austin puts one foot in front of the other and bends the front knee in a lunge position with her arms straight above her head. \u201cWhat you want to do here is pull your tummy in and push like a crunch,\u201d she explains as she bends the back knee and elbows toward her chest before returning to the starting position. \u201cFeel as though you\u2019re working those core muscles. Lift and crunch.\u201d Austin recommends switching legs after 30 seconds.<\/p>\n Next time you\u2019re looking for a core-strengthening workout<\/a> that\u2019s as quick and simple as it is effective, try adding one or all three of these moves into your routine.<\/p>\n