Optimize the following python program and reduce its runtime.
def find_min(lst):
    return min(lst)

list = [2, 3, 8, 4, 5]
def find_min(lst):
    min_val = lst[0]
    for value in lst[1:]:
        if value < min_val:
            min_val = value
    return min_val

list = [2, 3, 8, 4, 5]