Calves: Your Most Underrated Muscle

Summary

The video explains that the calf muscles—especially the deeper soleus—do more than help us walk. When they contract, they help push blood back toward the heart, take up glucose from the bloodstream, and make small adjustments that support standing balance. Long periods of sitting leave these muscles inactive.

Key strategies and takeaways

• Keep moving throughout the day. Walking activates the calf-muscle pump and supports circulation. The presenter recommends walking more and taking the stairs when practical.
• Try seated “soleus push-ups” when walking isn’t possible. Sit with your knees bent and feet on the floor, then repeatedly lift your heels. This mainly works the soleus. In a study discussed in the video, continuous repetitions used nearly three calories per minute—about two-thirds of the energy expenditure reported for walking. The presenter stresses that this is a low-effort option, not a replacement for walking.
• Use movement breaks to interrupt sitting. Get up, walk, or stretch your legs regularly. The video describes a study in which breaks about every 30 minutes, lasting roughly six minutes and including light activity such as toe raises or half-squats, were associated with lower post-meal blood sugar and insulin.
• Consider movement after meals. Muscle contractions can help muscles take up glucose, including through a pathway that does not depend on insulin. In a small study described in the video, participants doing sustained soleus push-ups had a smaller rise in blood sugar and insulin after a sweet drink than those who remained seated. These findings may be relevant to people with impaired glucose metabolism, but they are not a substitute for medical care.
• Train calf strength and balance. The presenter says he trains his calves once or twice weekly, including with single-leg standing calf raises and machine calf presses.
• Practice balance challenges as appropriate:
  • Perturbation training: Stand on one leg while someone gives gentle nudges, or use a balance platform to practice recovering stability.
  • Dual-task training: Combine a balance task with another activity, such as walking while turning your head or passing a small ball from hand to hand. A simpler option is to stand on one leg while talking or typing.
• Build up gradually. If you’re inactive, start with a short walk and increase activity in line with your abilities. For balance exercises, choose a level that feels safe.

Presenter and sources

• Presenter/source: Nutrition Made Simple! The channel identifies its host as Dr. Gil Carvalho.
• Research discussed: Studies on soleus push-ups and glucose responses, activity breaks during prolonged sitting, and balance training. The subtitles do not name the individual researchers or studies.