All articles tagged with #core
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.
Researchers have discovered that ancient lava flows from Baffin Island in Canada's Arctic Archipelago contain high levels of helium-3, helium-4, and another rare isotope, suggesting a possible leak from the Earth's core. While the implications for the core are unclear, the leak does not pose any immediate danger as the remote location of the lava flows minimizes the risk of exposure.
Scientists have long been puzzled by the presence of significant amounts of heavy metals like gold and platinum in Earth's crust and mantle, as existing models suggest they should have sunk to the core. However, a new model proposed by researchers from Yale University and the South-West Research Institute explains that early Earth's molten ocean and subsequent large asteroid impacts created a partially molten region beneath the local magma ocean, allowing some of the heavy metals to stay in the mantle. This model provides an explanation for the abundance of heavy metals in Earth's crust and their release in volcanic eruptions.
Earth is composed of a crust, mantle, and core. The crust, which accounts for only 1% of the planet's volume, is split into oceanic and continental crusts. The mantle, making up 84% of Earth's volume, is solid rock but acts like a fluid in geological timescales. The core consists of a liquid outer core surrounding a solid inner core, giving Earth its magnetic field. The inner core is slowly growing as the planet cools.