From a biological perspective, age can be influenced by factors such as lifestyle, health conditions, and overall physical fitness. In this case:
- Lunga, at 45, exercises regularly and maintains a healthy lifestyle, which generally contributes to better cardiovascular health and metabolic function.
- Penny, at 23, is overweight, does not exercise, and has conditions like asthma and type 2 diabetes, which can lead to a higher biological age due to the strain on her body and increased risk for various health issues.
Considering these factors, Penny may be considered "older" biologically due to her health conditions and lifestyle compared to Lunga. Thus, the answer is:
Penny.