Leg Training is the most pro-metabolic training.

“Most people think of leg training as aesthetic training. But your lower body is not just there for looks. It is the largest trainable glucose-disposal machine you have.

Skeletal muscle is the body’s biggest glucose sink, and the lower body contains the biggest pieces of that sink: glutes especially, but also quads, hamstrings & calves.

When these muscles are strong and active, they store glycogen and pull glucose out of the blood. The more working muscle you have below the waist, the better your body can handle glucose. 

When these muscles atrophy, there is less active tissue available to absorb glucose. Glucose hangs around longer. Insulin has to work harder.

This is one reason sitting is so metabolically destructive. It does not just “burn fewer calories.” It turns off the largest muscles that should be helping you regulate blood sugar all day.

And the calves deserve attention too. The soleus, the deep calf muscle, is often called a second heart because it helps pump blood and fluid back up from the lower legs.

So yes, train upper body.

But prioritize legs.

More leg days. More walking. More stairs. More glute work. More calf raises. More muscle below the waist doing actual metabolic work.

Not just for shape. For glucose disposal, circulation, lymph flow, insulin sensitivity, and long-term metabolic health.”

@varianavolk

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ThriveFit founder Mike Boyle on Peter Attia podcast