Sit-ups have long been a go-to exercise. They can strengthen the abdominal muscles, improve core endurance, and build the kind of midsection strength that supports healthy aging. What they cannot do, however, is choose where your body burns fat. That is why countless people keep doing crunches for weeks and still see a loose stomach in the mirror.
The encouraging news is that staying active can make a real difference. A 2023 meta-analysis of 84 randomized controlled trials found that exercise helps reduce visceral fat, the deeper abdominal fat stored around the organs, in adults with overweight and obesity. The most effective strategy is to remain active overall while also training the muscles that stabilize the trunk. Stronger abs and improved posture can make the stomach look firmer, even as total body fat comes down.
Core work can also benefit older adults in other ways. A 2025 meta-analysis found it to be an effective method for improving balance, which becomes more important with age. In addition, the Centers for Disease Control and Prevention recommends strength training at least two days a week for older adults. Best of all, you do not need a gym or any equipment to begin. The four bodyweight moves below can be done in just a few minutes before breakfast.
To help narrow down the best options, we spoke with James Brady, CPT, a certified personal trainer at OriGym, who recommends the following morning exercises. “These exercises can strengthen the abdominal muscles and improve posture, which may help the stomach appear firmer,” Brady says. “However, no exercise can specifically reduce fat from the stomach, so overall activity, strength training and nutrition also play an important role.” Read on for the moves and step-by-step instructions. When you finish, don’t miss these 4 Standing Exercises That Flatten Apron Belly Faster Than Sit-Ups After 65.
Standing Knee-to-Elbow Crunches
This movement brings one knee and the opposite elbow together, working the abs through a twisting pattern from a standing position while sparing the neck and back. “Standing knee-to-elbow crunches work the abdominals without the neck and back strain that can come with repeated sit-ups,” Brady says.
How to do it:
- Stand tall with your feet hip-width apart.
- Lift one knee toward your chest while bringing your opposite elbow down to meet it.
- Lower your foot back to the floor with control.
- Alternate sides at a steady pace.
- Complete two to three sets of 10 to 12 reps per side.
- Rest for 30 to 45 seconds between sets.
Bird Dogs
Reaching one arm forward and the opposite leg back while keeping your torso still challenges the deep stabilizing muscles of the core. “Bird dogs strengthen the deep core muscles while also improving balance and spinal stability,” Brady explains.
How to do it:
- Get down on your hands and knees with your hands under your shoulders.
- Extend one arm forward and the opposite leg behind you.
- Pause for one to two seconds, then return to the start with control.
- Switch sides.
- Aim for two to three sets of 8 to 10 reps per side.
- Rest for around 30 seconds between sets.
Glute Bridges
Driving through your heels to lift your hips strengthens the glutes and core at the same time, giving your pelvis and lower back the support they need to help maintain good posture throughout the day. “Glute bridges strengthen the glutes and core, helping support the pelvis and lower back,” says Brady.
How to do it:
- Lie on your back with your knees bent and your feet flat on the floor.
- Flex your abdomen.
- Press through your heels and lift your hips.
- Lower slowly back to the floor.
- Perform two to three sets of 10 to 15 reps.
- Rest for 30 to 45 seconds between sets.
Dead Bugs
Lowering one arm and the opposite leg while keeping the lower back pressed into the floor teaches the core to stabilize the body without stressing the back the way some other core moves can. “Dead bugs are effective for training the core without repeatedly flexing the spine,” Brady explains.
How to do it:
- Lie on your back with your arms raised and your knees bent.
- Keep your lower back pressed down against the floor.
- Slowly lower one arm and your opposite leg.
- Return to the starting position and switch sides.
- Complete two to three sets of 8 to 10 reps per side.
- Rest for around 30 to 45 seconds between sets.
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