Variation of skin temperature before, during and after contrast bath therapy

This study is looking at how skin temperature changes when a person has a contrast bath — a therapy where you alternate between soaking a body part in warm and then cold water. Researchers want to measure exactly how much the skin temperature changes and whether it matters whether you start with warm or cold water. This will help physiotherapists better understand how this treatment works. You may be eligible if: - You are a healthy adult between 18 and 30 years old - Your body mass index (BMI) is between 20 and 25 - You are a college student willing to participate as a volunteer You may NOT be eligible if: - You have reduced feeling or sensation in your feet or legs - You have heart failure, peripheral nerve disease, obesity, or a metabolic disease - You have a skin condition or recent foot injury Talk to your doctor about whether this trial might be right for you.