This Happens When You Do 25 Push-Ups Twice A Day

Ekberg presents this protocol as a minimal-effective-dose approach that fits into any lifestyle. He emphasizes that 25 push-ups is a 'sweet spot'—hard enough to trigger adaptation but not so hard that it requires recovery days. Because the anabolic signal persists for 24–48 hours, doing it twice a day keeps the muscle-building window open continuously. He recommends a morning session to harness the natural cortisol spike and an evening session (not too late) to aid sleep. He strongly suggests committing to 90 days, as it takes several weeks to form a habit and even longer to see visible body composition changes. The cumulative volume—4,500 push-ups in three months—is substantial and drives the adaptations he describes. The protocol is designed to be sustainable and scalable, with modifications for all fitness levels.

Ekberg strongly encourages people not to use inability as an excuse. He outlines a clear progression: start with wall push-ups or knee push-ups on a bed, then move to knee push-ups on the floor, then to full push-ups with a reduced range of motion, and finally to full push-ups. He also suggests breaking the 25 reps into multiple smaller sets (e.g., 5 sets of 5) to accumulate volume without fatigue. The emphasis is on consistency and gradual improvement. He mentions that combining push-ups with squats can further enhance the workout, and that even if you can't do 25, doing something is infinitely better than doing nothing. The goal is to build the habit first, then let the strength come.

Ekberg references a previous video on squats and suggests pairing the two exercises for a time-efficient, equipment-free full-body routine. He notes that even doing them one after the other is a manageable workload. For those who cannot complete 25 of each continuously, he recommends interval-style sets (e.g., 5 squats, 5 push-ups, repeat until the total is reached). This approach keeps the intensity manageable while still accumulating volume. The combo leverages the push-up's upper-body and core benefits with the squat's lower-body and mobility benefits, creating a balanced daily movement snack.

Ekberg explains that mechanical tension on muscle fibers initiates a signal through the mTor pathway, which triggers muscle protein synthesis. He argues that 25 push-ups is a 'sweet spot' because it is challenging enough to activate this pathway but not so intense that it causes significant fiber breakdown. In contrast, a bodybuilder's workout aims to break down muscle to force a stronger regrowth, necessitating 48–72 hours of recovery. The signal from 25 push-ups lasts 24–48 hours, so performing them twice a day keeps the anabolic window open continuously, allowing for steady, low-grade muscle building without ever needing a rest day. This approach makes muscle maintenance and growth accessible to people who cannot commit to gym sessions or complex programming.

Ekberg walks through the anatomy: primary movers are pectoralis major, triceps, and anterior deltoid. Contributing muscles include serratus anterior and pectoralis minor. The entire abdominal wall—rectus abdominis, internal and external obliques—is engaged to stabilize the trunk. Back muscles such as erector spinae, rhomboids, mid and low trapezius, and rotator cuff muscles are activated to maintain posture. The hips contribute via gluteus maximus and iliopsoas (hip flexors). Even the quadriceps and tibialis anterior on the front of the lower leg are recruited, albeit more passively. This comprehensive recruitment means that a brief set of push-ups provides a stimulus to a large portion of the body's musculature, improving overall stability and functional strength.

Ekberg cites a 2019 Harvard study that stratified men by push-up capacity and found a dramatically reduced heart attack risk in those who could perform 40 or more push-ups compared to those who could do fewer than 10. He explains the mechanism: performing push-ups increases the demand for blood flow in the working muscles, which requires an increase in cardiac output. When this demand is applied regularly, the heart adapts by becoming stronger and increasing its stroke volume—the amount of blood pumped per beat. Thus, the ability to do push-ups is not just a marker of upper-body strength but an indicator of overall cardiovascular conditioning. This insight makes the case that a brief, intense bodyweight exercise can confer heart-protective benefits similar to traditional cardio.

Ekberg explains that at rest, insulin is the only signal that triggers GLUT4 transporters to move to the cell surface and allow glucose entry. However, muscle contraction provides a second, independent signal that also mobilizes GLUT4. This means that simply moving after a meal can lower blood glucose and insulin spikes (postprandial) without relying on insulin. He then addresses the concern about competition for blood flow: while digestion does increase blood flow to the gut, cardiac output is not fixed—the heart can increase its total output to supply both the gut and the muscles. Because 25 push-ups is a short, relatively intense but brief effort (60–90 seconds), it does not require an enormous amount of blood and will not upset digestion. He cautions that extreme exercise (like running a marathon) would compete, but moderate activity is fine.

Ekberg explains that morning cortisol is naturally elevated to mobilize energy and prepare the body for the day. If you remain sedentary, that cortisol can contribute to chronic stress and abdominal fat accumulation. Doing push-ups in the morning channels that cortisol into its intended purpose—physical activity—thereby using it productively. The exercise also triggers the release of BDNF, which he calls 'miracle growth for your brain,' enhancing focus, mood, and neuroplasticity (the brain's ability to rewire and learn). Additionally, push-ups provide a slight boost in testosterone and human growth hormone, which further supports recovery and sleep. He recommends a morning set and an evening set, but cautions that the evening set should not be too late, to allow the body to settle down before sleep. The cumulative effect is a twice-daily brain and hormone boost that improves mental clarity and sleep architecture.

Ekberg outlines a three-month progression. Weeks 1–2: strength increases noticeably, but this is due to improved precision and timing of the neural signals to the muscles—no new muscle tissue is built. Weeks 3–4: strength continues to improve as the body gets better at recruiting a higher percentage of muscle fibers (normally only a fraction are used at once), but still no hypertrophy. Month two: actual muscle growth (hypertrophy) begins at a microscopic level, along with noticeable improvements in cardiovascular efficiency (less winded, less fatigue) and posture due to strengthened postural muscles. Month three: the hypertrophy becomes visible, body composition shifts toward more lean mass, sleep quality improves, and energy levels become more stable. He notes that over 90 days, the total volume is 4,500 push-ups, which is a significant cumulative stimulus. This timeline helps people stick with the habit by understanding that the early gains are real but invisible, and the visible rewards come later.