Yes, absolutely. Different parts of the body heal at different rates. The heart, stomach, and liver adapt very quickly. Other muscles improve less quickly. Join

Yes, absolutely. Different parts of the body heal at different rates. The heart, stomach, and liver adapt very quickly. Other muscles improve less quickly. Joints improve and adapt over weeks. Bone density and flexibility is almost impossible to regain once it’s lost even for young people. That is why slowly building up slow running speed for long distances, such as 6 miles or more, is vital for improving physical health. It’s not about just the cardio. It’s about strengthening the entire body. Cheating that and immediately pushing for speed gets people injured.