Your feet can slip forward and jam your toenails into the fronts of your shoes if they’re too large. Shoes that fit too tightly cram your feet at the fronts of your shoes so you feel the impact more with each stride, which could lead to bruising and blisters that turn your toenails black.
If you leave your socks on when they’re damp, it could lead to foot or nail fungus. Try on your running shoes with your socks to make sure you still have space between the end of your toes and the front of your shoe.
Lace your shoes with a criss-cross pattern up to the second-highest eyelet on each side of the shoe. Take the left lace and feed it through the top eyelet on the left side of the shoe to form a loop. Feed the right lace through the top eyelet on the right side of the shoe to make a second loop. Pull the left lace through the right loop, and pull the right lace through the left loop. Tie a bow knot to keep your laces secured.
It’s safe to put a non-adhesive bandage directly on your toenail, but avoid dressings with adhesive since they could painfully pull the nail out of the nail bed.
Over-trimming your nails could lead to ingrown toenails. You can trim the edge of a loose nail if it gets caught on your socks, but only if it doesn’t cause you pain. [8] X Research source
If your feet are sweaty or still feel damp, wash and dry them thoroughly.
Keep a second pair of running shoes that you can wear while the other pair is drying.
If a blood blister pops, it could make your nails bloody or make your toenail feel loose.
Avoid trying to drain a blister or remove a nail at home since it can be painful and you’re more at risk of infection.
