As with any physical activity, swimming offers you both good and bad days. Some days you’ll have great workouts, others you’ll slog through mediocre workouts, and some days you’ll have bad workouts. This is normal, but when you experience more bad workouts than good ones, it might be time to look at what you’re doing in and out of the pool and make some changes. A bunch of bad days in a row tends to lead to frustration, a lack of motivation, and, of course, the dreaded burnout.