The time frame for the increase in foot strength due to wearing barefoot shoes can vary from person to person. People start to see benefits and changes in their foot strength after 6 months. Yet, this can depend on how often you wear and use these shoes. In addition to that, barefoot shoes won’t just increase your foot strength. They will also support your whole body, as they help to make sure your body moves in the right way. This will include your posture and calf muscles.