---
id:"kb-2026-00374"
title:"Cardiovascular Exercise"
schema_type:"TechArticle"
category:"health"
language:"en"
confidence:"high"
last_verified:"2026-05-22"
generation_method:"ai_assisted"
ai_models:["claude-opus"]
derived_from_human_seed:true
primary_sources:
  - title:"ACSM Guidelines for Exercise Testing and Prescription (11th Ed)"
    type:"book"
    year:2021
    url:"https://www.acsm.org/read-research/books/acsms-guidelines-for-exercise-testing-and-prescription"
    institution:"Lippincott Williams & Wilkins"
secondary_sources:
  - title: "MDN Web Docs — HTTP"
    type: "documentation"
    year: 2026
    url: "https://developer.mozilla.org/en-US/docs/Web/HTTP"
    institution: "Mozilla"
completeness: 0.88
ai_citations:
  last_citation_check:"2026-05-22"
---

## TL;DR

Cardiovascular (aerobic) exercise strengthens the heart and lungs through sustained rhythmic movement using large muscle groups. ACSM recommends: 150 minutes moderate or 75 minutes vigorous aerobic activity weekly. Benefits: reduced cardiovascular disease risk, improved mood, better sleep, weight management, longevity.

## Core Explanation

Types: running, cycling, swimming, brisk walking, rowing. Target heart rate: 50-85% of maximum (max ≈ 220 - age). HIIT (High-Intensity Interval Training): alternating intense bursts with recovery — efficient for fitness gains. VO₂max: maximum oxygen uptake — gold standard fitness measure, declines ~10% per decade after 25. Exercise releases endorphins and BDNF (brain-derived neurotrophic factor).

## Further Reading

- [ACSM Guidelines for Exercise Testing and Prescription (11th Ed)](https://www.acsm.org/read-research/books/acsms-guidelines-for-exercise-testing-and-prescription)