Dehydration can make any workout seem like a marathon. You need to make sure you are drinking water before, during, and after each workout – even when you don’t feel thirsty. The longer the workout, the more you should drink. Most people just need a cup of water before, during, and after a basis thirty minute workout, but if you’re still feeling thirsty, it never hurts to have a bit more. This is especially true on hot days or when the air conditioner at the gym is broken.
Too Much Stress
Being too tense in your life can translate into too much tension in your body. When your muscles are tight, your workout can seem harder than it usually is. To make sure that you are keeping your body as loose as possible, try to leave your worries behind when you exercise. This will help your stamina and endurance to be higher while also helping you to focus on your body and not on things which can distract you from your goals.
Your fitness level will vary from day to day, but the more you workout, the higher it will be overall. Consistency is what matters when you exercise, even though every day will not be the best possible workout. What matters is that you showed up and that you are going to try your hardest even when you don’t feel like it.