Cardio 👟
Cardio means 30 minutes of brisk aerobic movement: running, cycling, swimming, dancing, or anything similar, done at a pace where holding a conversation becomes hard. It is one of the most studied habits in all of health research.
To start small, pick one activity you actually enjoy and begin with 10 to 15 minutes at a comfortable pace, a few days a week. Build up gradually toward 30 brisk minutes. Even doses below the usual recommendations appear to matter: in adults over 60, a low dose of moderate-to-vigorous activity was linked to a 22% lower mortality risk, with greater benefits at higher doses (Hupin et al., 2015).
The heart-related evidence is strong. Meta-analyses of randomized controlled trials found that aerobic exercise significantly improved cholesterol and triglyceride levels in both women (Kelley et al., 2004) and men (Kelley & Kelley, 2005).
Your brain may benefit too. A meta-analysis of 29 randomized trials found modest improvements in attention and processing speed, executive function, and memory with aerobic exercise training (Smith et al., 2010).
How much is enough? A pilot trial that assigned sedentary adults to 75, 150, or 225 minutes per week found fitness improved in a dose-dependent way, and studies suggest some cognitive benefits as well (Vidoni et al., 2015). The 150-minute weekly target lines up well with five 30-minute brisk sessions.
Benefits
- Heart Health
- Mood
- Metabolism
- Bone Density
- Depression Reduction
- Brain Health
- Brain Speed
- Memory
- Cognition Boost
- Attention