How long does it take to see improvements in cardiorespiratory fitness from starting an exercise routine ?
When starting an exercise routine to improve cardiorespiratory fitness, noticeable changes can occur within weeks, but significant and lasting improvements typically take several months of consistent training. Factors affecting improvement rates include baseline fitness level, workout frequency and intensity, age, health status, nutrition, recovery, and genetics. To maximize progress, set realistic goals, mix up your routine, monitor your progress, stay consistent, and get adequate rest.