Running transformed my fitness — specific results after 13 months

I track everything, so here are actual results after 13 months of Running: significantly improved cardiovascular fitness, noticeable strength gains, and a flexibility improvement I didn't expect. None of that came from a gym program — it came from learning midfoot strike and understanding interval training.

race day energy at a marathon was the qualitative thing I didn't expect to measure but felt clearly. The foam roller cost was about what I expected. overtraining temptation before a goal race is real — I had to adjust my schedule around it. For pure fitness return on time investment, Running is hard to beat.