Yoga alone likely not enough to keep heart healthy

Clearly true. Clearly predictable if you know squat about fitness. Clearly a squandering of resources.

"Yoga...probably won't give you the workout you need to keep your cardiovascular system in shape, a new study shows."

"Probably"?

It is a certainty.

More waste from stupidity.

This is a gross embarrassment.

Don't fall into the trap. Get fit. What works is known and will not change as the foundational principles are immutable. See here, here, here, and here.