Building Capillary Beds
Long-duration exercise is crucial for developing capillary beds within muscles, enhancing oxygen delivery and energy utilization. As you engage in steady efforts, you create new microcapillaries, which significantly improve endurance and performance. This vascular adaptation allows for more efficient energy use, making subsequent workouts feel easier and more manageable.In this clip
From this podcast

Huberman Lab
How To Build Endurance In Your Brain & Body | Huberman Lab Podcast #23
Related Questions
How does increasing capillaries improve muscle endurance?
Does muscular endurance training increase microcapillaries?
Does muscular endurance training increase microcapillaries as discussed in the episode How To Build Endurance In Your Brain & Body | Huberman Lab Podcast #23 and the clip Building Capillary Beds?