I'm training for a half-marathon - these are the running non-negotiables I can't be without, from vests and shoes to electrolytes and fitness tech

SHOPPING: From the best running shoes and protein snacks to the tastiest electrolytes and comfiest socks, here's my non-negotiables for half-marathon training.
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Bayes' Theorem: What It Is, Formula, and Examples

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...