Taking a bath can solve problems of swelling and blood circulation.
I take bath which is 38 – 40C for 15 – 20 minutes to warm the centre of my body.
40C is low for Japanese, but I start sweating and get warm up after 20 minutes.
Taking a bath is also good for detoxing.
Water gets cold fast during winter; therefore, I reheat a couple time in 15 – 20 minutes.
There is a function to reheat a bath in Japan.