Joachim’s trainer tells him he needs to focus on more aerobic activities instead of anaerobic activities. Which activity should he add to his workout routine to most effectively make this happen?

To shift his focus to more aerobic activities, Joachim should add activities that emphasize sustained, steady-state cardiovascular exercise. Good options include:

- **Running or jogging**: These activities maintain a consistent pace over an extended period, which enhances aerobic endurance.
- **Cycling**: Riding a bike at a steady pace can effectively improve aerobic fitness and is a low-impact option.
- **Swimming**: This is a full-body workout that is particularly great for building aerobic capacity while being easy on the joints.
- **Brisk walking or hiking**: These lower-intensity activities can also help improve aerobic conditioning.
- **Rowing**: This can be a great way to build aerobic capacity while working multiple muscle groups.

Among these, running or swimming are often recommended for their effectiveness in improving aerobic conditioning. Choosing an activity that he enjoys will also help him stay motivated and consistent with his workout routine.