Be sure and always wear some sort of eye protection (e.g., safety goggles, safety glasses) when using a reciprocating saw. Like with most electrical saws, the fast action of the cutting blade can cause dust and debris to get into the air. Wearing a dust mask and ear defenders (e.g., ear plugs) can also be helpful.
You can help yourself out by not being around a noisy environment if at all possible, and wearing hearing protection when it's appropriate for the situation.
Along with the check-up you will probably want to know what the range of frequency is most affected. This means a trip to a hearing clinic to get your ears tested. Have you ever been in a crowded room, had someone speaking to you right across the table and not been able to understand what they said? The person speaking in a normal tone of voice may be speaking at the same frequency that the ambient noise in the room coupled with the ringing in your ears is totally drowned out. Sometimes I've had to nod at them as if I understood what they said even when I had no clue. One of the therapies for tinnitus involves the use of a noise generator to diminish your sensitivity to the frequency you are hearing protection equipment.
Under Armour is a recognized manufacturer of base layer clothing for all sports. Rugby is a game that requires your body to maintain fitness for tough, physical playing and Under Armour base layers are important protective clothing to make yourself comfortable for longer periods in all kinds of playing conditions. The synthetic fabrics they are made of are soft, wrinkle and abrasion resistant and easy to maintain. Merino wool and treated silk are other fabrics used for base layer. It is always a good idea to have separate clothing and gear for training and for actual playing. There is a lot of equipment involved in rugby training but use your best and the most comfortable gear for games. Forearm and bicep guards, shin protection and ear protection are crucial wear needed when playing rugby.
PNR - "Passive Noise Reduction" style headsets protect hearing by covering the ears and forming a seal against external noises. Much like hearing protectors - which is what they are at the most basic level - they buffer your ears from loud sounds and decrease the noise level that you hear. All headsets are passive in one way or another. Certain features of a unit can help or hurt the amount of passive noise reduction it provides. If the frame doesn't fit properly, it can allow extra sound through the ear seal, and reduce the noise reduction.
Those are three simple things that you can do to maintain your good hearing. If you do those three things, you will have good hearing ability and you will be away from suffering hearing damage.