There is no limit on time or amount of times you go out for exercise.or indeed where you exercise and how you get there. There are more categories for going out if you feel you need to for your mental health, are escaping from an abusive situation. Just a couple mentioned by a lawyer on the news.
listened to a bit on Jeremy Vine (the downside of homeworking) it's a minefield with some forces going over the top, others being very sensible The spokesperson from Derbyshire tried to excuse their behaviour based on the previous weekends bad behaviour, terrible
They do that regularly to be fair. The water has a pH level similar to bleach so it is often dyed to stop people swimming in it