A short, easy floor routine done on your back for just ten minutes a day showed measurable gains in balance, flexibility and side-to-side agility in a new Japanese study. Researchers designed a two-week program to sync core control with lower-body coordination, and participants improved tests tied to movement control rather than raw strength. The work points to a low-risk way to sharpen neuromuscular coordination and suggests a role for simple, supine exercises in morning routines, rehab and fall-risk reduction research.
The trial was small but focused: researchers recruited healthy young adults and ran two experiments to test the routine’s impact on standing balance, side-step agility and trunk flexibility. Improvements showed up without increases in grip strength, sprint speed, jump distance or other measures of maximal power. That pattern hints at neural and coordination changes rather than muscle growth.
“One of the biggest practical takeaways is that even a short, low-load exercise program performed lying down may still improve important physical functions,” said corresponding author Tomoaki Atomi. He and colleagues emphasized that linking trunk control to lower-limb movement is central to the effect, not heavy loading or long gym sessions.
“Many people may assume that improving movement requires intense standing exercise or strength training, but our findings suggest that improving how the body coordinates movement — particularly between the trunk and lower limbs — may also be highly valuable,” he added. The study’s protocol leaned on precise positioning and timing to teach the nervous system better coordination patterns.
The training lasted two weeks and used a supine setup so participants worked while lying on their backs. That position reduces fall risk and lets people focus on abdominal activation, bridging motions that connect trunk and hips, and toe and ankle coordination drills. The authors argue the format allows targeted neuromuscular practice without the fatigue and instability of standing drills.
Technique mattered: the researchers stressed careful toe and ankle placement to get the intended benefits, and they recommended doing the set in the morning to help the body “wake up” balance and coordination systems. For many people a brief, no-equipment routine could become a convenient daily primer before the day starts. The time commitment is small, which helps with long-term adherence.
Not every fitness metric moved. The study did not find significant changes in sprint time, standing long jump or grip strength, outcomes tied to explosive power and raw force production. Instead, flexibility, balance and side-step performance improved, suggesting gains in control and timing rather than size or peak force.
“The most meaningful finding to us was not simply that flexibility improved, but that balance and side-step performance also improved without significant changes in maximal strength or power,” Atomi said. The researchers caution that these outcomes are early evidence of feasibility rather than proof of broad clinical impact, and they call for longer, larger trials in varied populations.
Outside experts flagged the short timeline and sample limits. “Two weeks is too short to build muscle and the data confirm that,” said Jordan Weiss. “What did improve was coordination, which is the brain learning faster than the body can grow.” Weiss noted that short-term testing gains can also reflect familiarity with tasks rather than lasting physiologic change.
“Healthy young adults adapt to almost any motor task within days,” he said. “Some of this is real neural change, and some is just familiarity with the test.” Still, Weiss agreed the supine approach has practical benefits for safety and accessibility, especially for people at higher risk of falling or those easing back into movement after injury.
“The supine setup takes the fall risk out of the session,” he said. “A free, equipment-free format can add tremendous value even if the underlying evidence is still preliminary.” The researchers themselves highlight the need to test older adults and rehab patients before any clinical claims are made, but they see promise in a low-load, low-risk primer for coordination.
Those with existing injuries, severe balance problems or other medical concerns should check with a doctor or physical therapist before trying a new routine. The study also has a personal angle: author Tomoaki Atomi collaborated with his mother, Yoriko Atomi, whose work focuses on “body-mind integrative science.” “I am committed to creating a world where people everywhere can live beautiful, upright lives — both physically and mentally,” she said.
