All articles tagged with #core
A Science Advances study suggests Ganymede’s metallic core is still forming today, and that ongoing convection in this migrating, hot iron core powers its long-unique magnetic field via a ‘cold-start’ dynamo; the results don’t fully overturn older theories, but they offer a new mechanism to explain why Ganymede’s dynamo persists while Callisto shows no obvious one, with implications for Europa and future data from Europa Clipper and Juice.
As hormones shift with age, fat tends to gather around the midsection and many people lose muscle, so experts say targeted deep-core work plus cardio can tighten the waist more effectively than traditional lifting alone. The article outlines six daily moves—planks, side planks, dead bugs, bird-dog, plus cardio options like running or an elliptical—to train the transverse abdominis and improve posture, emphasizing daily consistency and diet alongside exercise for noticeable waist changes after 50.
After 60, belly fat and visceral fat can be harder to shed due to muscle loss and hormonal changes. The article suggests four morning, standing bodyweight moves—bodyweight squats, standing march, cross-body knee drives, and a high plank—to boost daily activity and help reduce belly overhang, while emphasizing that fat loss comes from overall movement, better sleep, stress management, and a nutritious diet rather than ab workouts alone.
A Pilates instructor shares four deep-core moves—leg circles, rolling like a ball, criss cross, and single-leg stretch—to improve posture, spinal mobility, and daily stability without planks or crunches.
Lower back pain is common; physical therapist Karena Wu recommends stopping leg-crossing when sitting because it twists the spine and creates muscle imbalance. Sit with legs hip-width apart, maintain a neutral spine, brace the core, and use a small back support (like a rolled towel) to keep the natural arch. If leg crossing is necessary, cross at the ankles. These posture adjustments can help reduce stiffness and support the lower back over time.
A Pilates instructor shares a seven-move, equipment-free routine designed for people over 40 to wake up the glutes and core, improve mobility and posture, and can be done 2–4 times a week with simple modifications.
Seismic data and geodynamo simulations indicate two hot “Blob” regions at the core–mantle boundary heat the surrounding mantle less evenly, insulating the outer core and shaping long-lived, longitudinal magnetic-field patterns, helping explain Earth's magnetic stability over hundreds of millions of years.
A fitness expert shares four low-impact daily moves that target the transverse abdominis to boost fat loss and midsection stability, arguing that activating deep core muscles and functional strength accelerates belly shrinkage more than steady cardio after age 50.
New Jersey Devils GM Tom Fitzgerald said the team’s play has been “absolutely not good enough” and took responsibility for the slump, pledging to find solutions and push the club back toward playoff contention. He emphasized faith in the core and coaching staff despite injuries and a tight standings race, while remaining open to roster upgrades.
A fitness expert shares four effective strategies to counteract the negative effects of prolonged sitting, including hip stretches, strength training, regular movement breaks, and core strengthening exercises, emphasizing the importance of consistent activity to maintain muscle health and reduce health risks.
Scientists using NASA's InSight mission have discovered that Mars has a solid inner core surrounded by a liquid outer core, similar to Earth's structure, which has important implications for understanding the planet's evolution and past magnetic field.
ACE-certified personal trainer Staci Alden shares a quick five-minute Pilates routine consisting of nine movements, each to be done for 30 seconds, to stretch and strengthen the entire body from head to toe. The routine includes exercises such as seated breathing, half roll back, supine leg circles, glute bridge, side lying leg kick, swan prep, leg pull front, and cat stretch, providing a convenient way to incorporate mood-boosting movement into a busy day.
New analyses of seismic data from NASA's InSight lander have revealed the presence of a vast radioactive ocean of magma beneath the surface of Mars, reaching up to 125 miles in depth. This discovery challenges previous estimates of Mars' core size and density, suggesting that the core may be small and dense like Earth's. However, the existence of the magma sea raises questions about the history of Mars' evolution and the cause of its magnetic field, as the magma would have prevented the core from cooling.
Two studies published in the journal Nature reveal that Mars's core is smaller than previously estimated, debunking earlier measurements. The discrepancy was due to the presence of a hidden 90-to-125-mile-deep ocean of molten rock, kept molten by radioactive elements, beneath Mars's solid mantle. This exotic magma ocean, which does not exist on Earth, may require a reevaluation of Mars's chaotic evolution. The discovery was made by reevaluating seismic data from the InSight lander and confirmed by a meteor impact that sent seismic waves through Mars's core. The existence of the magma ocean suggests that Mars's core is denser and iron-rich, with fewer lighter elements. This finding may necessitate a new explanation for Mars's magnetic field and its origin story.
Geophysical evidence from seismic data collected by the NASA InSight mission suggests the presence of an enriched molten silicate layer, known as the basal mantle layer (BML), above Mars's core. This BML, which is strongly enriched in iron and heat-producing elements, acts as a buffer between the core and mantle, reducing heat transfer and influencing Mars's thermochemical evolution. The presence of the BML explains the observed seismic reflections occurring above the core-mantle boundary (CMB) and suggests a smaller and denser core than previously inferred. These findings challenge the assumption of a homogeneous Martian mantle and provide new insights into the internal structure of Mars.