Question:
Hi, is it allowed to swim today ( תענית שבעה עשר בתמוז(
Answer:
A person should not go swimming on a fast day. The reason is because on a fast day is a day of being pained over our sins and a day of remorse. Therefore we should not be involved in pleasurable activities, frivolous activities, or activities of simcha.
Sources:
O:CH 568-12
