immunity

I build up my immunity.

私は免疫力を高めます

I build up my body's immunity.

私は体の免疫力を高めます

I build up my body's immunity at the gym.

私はジムで体の免疫力を高めます

I build up my body's immunity at the gym after work.

私は退勤後にジムで体の免疫力を高めます

I build up my body's immunity at the gym with my friend after work.

私は友達と退勤後にジムで体の免疫力を高めます